Sapiens and Homo Deus
Page 68
25. The Pope selling indulgences for money (from a Protestant pamphlet).
25.Woodcut from ‘Passional Christi und Antichristi’ by Philipp Melanchthon, published in 1521, Cranach, Lucas (1472–1553) (studio of) © Private Collection/Bridgeman Images.
The more Luther thought about it, the more he doubted this deal, and the Church that offered it. You cannot just buy your way to salvation. The Pope couldn’t possibly have the authority to forgive people their sins, and open the gates of heaven. According to Protestant tradition, on 31 October 1517 Luther walked to the All Saints’ Church in Wittenberg, carrying a lengthy document, a hammer and some nails. The document listed ninety-five theses against contemporary religious practices, including against the selling of indulgences. Luther nailed it to the church door, sparking the Protestant Reformation, which called upon any Christian who cared about salvation to rebel against the Pope’s authority and search for alternative routes to heaven.
From a historical perspective, the spiritual journey is always tragic, for it is a lonely path fit only for individuals rather than for entire societies. Human cooperation requires firm answers rather than just questions, and those who fume against stultified religious structures often end up forging new structures in their place. It happened to the dualists, whose spiritual journeys became religious establishments. It happened to Martin Luther, who after challenging the laws, institutions and rituals of the Catholic Church found himself writing new law books, founding new institutions and inventing new ceremonies. It happened even to Buddha and Jesus. In their uncompromising quest for the truth they subverted the laws, rituals and structures of traditional Hinduism and Judaism. But eventually more laws, more rituals and more structures were created in their names than in the name of any other person in history.
Counterfeiting God
Now that we have a better understanding of religion, we can go back to examining the relationship between religion and science. There are two extreme interpretations for this relationship. One view says that science and religion are sworn enemies, and that modern history was shaped by the life-and-death struggle of scientific knowledge against religious superstition. In time, the light of science dispelled the darkness of religion, and the world became increasingly secular, rational and prosperous. However, though some scientific findings certainly undermine religious dogmas, this is not inevitable. For example, Muslim dogma holds that Islam was founded by the prophet Muhammad in seventh-century Arabia, and there is ample scientific evidence supporting this.
More importantly, science always needs religious assistance in order to create viable human institutions. Scientists study how the world functions, but there is no scientific method for determining how humans ought to behave. Science tells us that humans cannot survive without oxygen. However, is it okay to execute criminals by asphyxiation? Science doesn’t know how to answer such a question. Only religions provide us with the necessary guidance.
Hence every practical project scientists undertake also relies on religious insights. Take, for instance, the construction of the Three Gorges Dam on the Yangtze River. When the Chinese government decided in 1992 to build the dam, physicists could calculate what pressures the dam would have to withstand, economists could forecast how much money it would probably cost, while electrical engineers could predict how much electricity it would produce. However the government needed to take additional factors into account. Building the dam flooded more than 200 square miles containing many villages and towns, thousands of archaeological sites, and unique landscapes and habitats. More than 1 million people were displaced and hundreds of species were endangered. It seems that the dam directly caused the extinction of the Chinese river dolphin. No matter what you personally think about the Three Gorges Dam, it is clear that its construction was an ethical rather than a purely scientific issue. No physics experiment, no economic model and no mathematical equation can determine whether generating thousands of megawatts and making billions of yuan is more valuable than saving an ancient pagoda or the Chinese river dolphin. Consequently China cannot function on the basis of scientific theories alone. It requires some religion or ideology, too.
Some jump to the opposite extreme, and say that science and religion are completely separate kingdoms. Science studies facts, religion speaks about values, and never the twain shall meet. Religion has nothing to say about scientific facts, and science should keep its mouth shut concerning religious convictions. If the Pope believes that human life is sacred, and abortion is therefore a sin, biologists can neither prove nor refute this claim. As a private individual, each biologist is welcome to argue with the Pope. But as a scientist, the biologist cannot enter the fray.
This approach may sound sensible, but it misunderstands religion. Though science indeed deals only with facts, religion never confines itself to ethical judgements. Religion cannot provide us with any practical guidance unless it makes some factual claims too, and here it may well collide with science. The most important segments of many religious dogmas are not their ethical principles, but rather factual statements such as ‘God exists’, ‘the soul is punished for its sins in the afterlife’, ‘the Bible was written by a deity rather than by humans’, ‘the Pope is never wrong’. These are all factual claims. Many of the most heated religious debates, and many of the conflicts between science and religion, involve such factual claims rather than ethical judgements.
Take abortion, for example. Devout Christians often oppose abortion, whereas many liberals support it. The main bone of contention is factual rather than ethical. Both Christians and liberals believe that human life is sacred, and that murder is a heinous crime. But they disagree about certain biological facts: does human life begin at the moment of conception, at the moment of birth or at some intermediate point? Indeed, some human cultures maintain that life doesn’t begin even at birth. According to the !Kung of the Kalahari Desert and to various Inuit groups in the Arctic, human life begins only after a baby is given a name. When an infant is born the family waits for some time before naming it. If they decide not to keep the baby (either because it suffers from some deformity or because of economic difficulties), they kill it. Provided they do so before the naming ceremony, this is not considered murder.2 People from such cultures might well agree with liberals and Christians that human life is sacred and that murder is a terrible crime, yet condone infanticide.
When religions advertise themselves, they tend to emphasise their beautiful values. But God often hides in the fine print of factual statements. The Catholic religion markets itself as the religion of universal love and compassion. How wonderful! Who can object to that? Why, then, are not all humans Catholic? Because when you read the fine print, you discover that Catholicism also demands blind obedience to a pope ‘who never makes mistakes’ even when he orders his followers to go on crusades and burn heretics at the stake. Such practical instructions are not deduced solely from ethical judgements. Rather, they result from conflating ethical judgements with factual statements.
When we descend from the ethereal sphere of philosophy and observe historical realities, we find that religious stories almost always include three parts:
1.Ethical judgements, such as ‘human life is sacred’.
2.Factual statements, such as ‘human life begins at the moment of conception’.
3.A conflation of the ethical judgements with the factual statements, resulting in practical guidelines such as ‘you should never allow abortion, even a single day after conception’.
Science has no ability to refute or corroborate the ethical judgements religions make. But scientists do have a lot to say about religious factual statements. Biologists are more qualified than priests to answer factual questions such as ‘Do human fetuses have a nervous system one week after conception? Can they feel pain?’
To make things clearer let us examine in depth a real historical example that you rarely hear about in religious commercials, but that had a huge social and political impact in
its time. In medieval Europe the popes enjoyed far-reaching political authority. Whenever a conflict erupted anywhere in Europe, they claimed the authority to decide the issue. To establish their claim to authority, they repeatedly reminded Europeans of the Donation of Constantine. According to this story, on 30 March 315 the Roman emperor Constantine signed an official decree granting Pope Sylvester I and his heirs perpetual control of the western part of the Roman Empire. The popes kept this precious document in their archive, and used it as a powerful propaganda tool whenever they faced opposition from ambitious princes, quarrelsome cities or rebellious peasants.
People in medieval Europe had great respect for ancient imperial decrees, and believed that the older the document, the more authority it carried. They also strongly believed that kings and emperors were God’s representatives. Constantine in particular was revered, because he turned the Roman Empire from a pagan realm into a Christian empire. In a clash between the desires of some present-day city council and a decree issued by the great Constantine himself, it was obvious to medieval Europeans that the ancient document ought to be obeyed. Hence whenever the Pope faced political opposition, he waved the Donation of Constantine, demanding obedience. Not that it always worked. But the Donation of Constantine was an important cornerstone of papal propaganda and of the medieval political order.
When we examine the Donation of Constantine closely, we find that this story is composed of three distinct parts:
Ethical judgement
People ought to respect ancient imperial decrees more than present-day popular opinions.
Factual statement
On 30 March 315, Emperor Constantine granted the popes dominion over Europe.
Practical guideline
Europeans in 1315 ought to obey the Pope’s commands.
The ethical authority of ancient imperial decrees is far from self-evident. Most twenty-first-century Europeans think that the wishes of present-day citizens trump the diktats of long-dead monarchs. However, science cannot join this ethical debate, because no experiment or equation can decide the matter. If a modern-day scientist time-travelled 700 years back in time, she couldn’t prove to medieval Europeans that the decrees of ancient emperors are irrelevant to contemporary political disputes.
Yet the story of Constantine’s Donation was based not just on ethical judgements. It also involved some very concrete factual statements, which science is highly qualified to either verify or falsify. In 1441 Lorenzo Valla – a Catholic priest and a pioneer linguist – published a scientific study proving that Constantine’s Donation was a forgery. Valla analysed the style and grammar of the document, and the various words and terms it contained. He demonstrated that the document included words that were unknown in fourth-century Latin, and that it was most probably forged about 400 years after Constantine’s death. Moreover, the date appearing on the document is ‘30 March, in the year Constantine was consul for the fourth time, and Gallicanus was consul for the first time’. In the Roman Empire, two consuls were elected each year, and it was customary to date documents by their consulate years. Unfortunately, Constantine’s fourth consulate was in 315, whereas Gallicanus was elected consul for the first time only in 317. If this all-important document was indeed composed in Constantine’s days, it would never have contained such a blatant error. It is as if Thomas Jefferson and his colleagues had dated the American Declaration of Independence 34 July 1776.
Today all historians agree that the Donation of Constantine was forged in the papal court sometime in the eighth century. Even though Valla never disputed the moral authority of ancient imperial decrees, his scientific analysis did undermine the practical guideline that Europeans ought to obey the Pope.3
On 20 December 2013 the Ugandan parliament passed the Anti-Homosexuality Act, which criminalised homosexual activities, penalising some activities by life imprisonment. It was inspired and supported by evangelical Christian groups, which maintain that God prohibits homosexuality. As proof they quote Leviticus 18:22 (‘Do not have sexual relations with a man as one does with a woman; that is detestable’) and Leviticus 20:13 (‘If a man has sexual relations with a man as one does with a woman, both of them have done what is detestable. They are to be put to death; their blood will be on their own heads’). In previous centuries the same religious story was responsible for tormenting millions of people all over the world. This story can be briefly summarised as follows:
Ethical judgement
Humans ought to obey God’s commands.
Factual statement
About 3,000 years ago God commanded humans to avoid homosexual activities.
Practical guideline
People should avoid homosexual activities.
Is the story true? Scientists cannot argue with the judgement that humans ought to obey God. Personally, you may dispute it. You may believe that human rights trump divine authority, and if God orders us to violate human rights, we shouldn’t listen to Him. Yet there is no scientific experiment that can decide this issue.
In contrast, science has a lot to say about the factual statement that 3,000 years ago the Creator of the Universe commanded members of the Homo sapiens species to abstain from boy-on-boy action. How do we know this statement is true? Examining the relevant literature reveals that though this statement is repeated in millions of books, articles and Internet sites, they all rely on a single source: the Bible. If so, a scientist would ask, who composed the Bible, and when? Note that this is a factual question, not a question of values. Devout Jews and Christians claim that at least the book of Leviticus was dictated by God to Moses on Mount Sinai, and from that moment onwards not a single letter was either added or deleted from it. ‘But,’ the scientist would insist, ‘how can we be sure of that? After all, the Pope argued that the Donation of Constantine was composed by Constantine himself in the fourth century, when in fact it was forged 400 years later by the Pope’s own clerks.’
We can now use an entire arsenal of scientific methods to determine who composed the Bible, and when. Scientists have been doing exactly that for more than a century, and if you are interested, you can read whole books about their findings. To cut a long story short, most peer-reviewed scientific studies agree that the Bible is a collection of numerous different texts composed by different human authors centuries after the events they purport to describe, and that these texts were not assembled into a single holy book until long after biblical times. For example, whereas King David probably lived around 1000 BC, it is commonly accepted that the book of Deuteronomy was composed in the court of King Josiah of Judah, sometime around 620 bc, as part of a propaganda campaign aimed at strengthening Josiah’s authority. Leviticus was compiled at an even later date, no earlier than 500 BC.
As for the idea that the ancient Jews carefully preserved the biblical text, without adding or subtracting anything, scientists point out that biblical Judaism was not a scripture-based religion at all. Rather, it was a typical Iron Age cult, similar to many of its Middle Eastern neighbours. It had no synagogues, yeshivas, rabbis – or even a bible. Instead, it had elaborate temple rituals, most of which involved sacrificing animals to a jealous sky god so that he would bless his people with seasonal rains and military victories. Its religious elite consisted of priestly families, who owed everything to birth and nothing to intellectual prowess. The mostly illiterate priests were busy with the temple ceremonies and had little time for writing or studying any scriptures.
During the Second Temple period a rival religious elite gradually formed. Due partly to Persian and Greek influences, Jewish scholars who wrote and interpreted texts gained increasing prominence. These scholars eventually came to be known as rabbis, and the texts they compiled were christened ‘the Bible’. Rabbinical authority rested on individual intellectual abilities rather than on birth. The clash between this new literate elite and the old priestly families was inevitable. Fortunately for the rabbis, the Romans torched Jerusalem and its temple in 70 AD while suppressing the Grea
t Jewish Revolt. With the temple in ruins, the priestly families lost their religious authority, their economic power base and their very raison d’être. Traditional Judaism – a Judaism of temples, priests and head-splitting warriors – disappeared. In its place emerged a new Judaism of books, rabbis and hair-splitting scholars. The scholars’ main forte was interpretation. They used this ability not only to explain how an almighty God allowed His temple to be destroyed, but also to bridge the immense gaps between the old Judaism described in biblical stories and the very different Judaism they created.4
Hence according to our best scientific knowledge, the Leviticus injunctions against homosexuality reflect nothing grander than the biases of a few priests and scholars in ancient Jerusalem. Though science cannot decide whether people ought to obey God’s commands, it has many relevant things to say about the provenance of the Bible. If Ugandan politicians think that the power that created the cosmos, the galaxies and the black holes becomes terribly upset whenever two Homo sapiens males have a bit of fun together, then science can help disabuse them of this rather bizarre notion.
Holy Dogma
In truth, it is not always easy to separate ethical judgements from factual statements. Religions have the nagging tendency to turn factual statements into ethical judgements, thereby creating serious confusion and obfuscating what should have been relatively simple debates. Thus the factual statement ‘God wrote the Bible’ all too often mutates into the ethical injunction ‘you ought to believe that God wrote the Bible’. Merely believing in this factual statement becomes a virtue, whereas doubting it becomes a dreadful sin.