The Demon-Haunted World. Science As a Candle in the Dark by Carl Sagan

There is no nation on Earth today optimized for the middle of the twenty-first century. We face an abundance of subtle and complex problems. We need therefore subtle and complex solu­tions. Since there is no deductive theory of social organization, our only recourse is scientific experiment – trying out sometimes on small scales (community, city and state level, say) a wide range of alternatives. One of the perquisites of power on becoming prime minister in China in the fifth century BC was that you got to construct a model state in your home district or province. It was Confucius’ chief life failing, he lamented, that he never got to try.

Even a casual scrutiny of history reveals that we humans have a sad tendency to make the same mistakes again and again. We’re afraid of strangers or anybody who’s a little different from us. When we get scared, we start pushing people around. We have readily accessible buttons that release powerful emotions when pressed. We can be manipulated into utter senselessness by clever politicians. Give us the right kind of leader and, like the most suggestible subjects of the hypnotherapists, we’ll gladly do just about anything he wants – even things we know to be wrong. The framers of the Constitution were students of history. In recogni­tion of the human condition, they sought to invent a means that would keep us free in spite of ourselves.

Some of the opponents of the US Constitution insisted that it would never work; that a republican form of government spanning a land with ‘such dissimilar climates, economies, morals, politics, and peoples,’ as Governor George Clinton of New York said, was impossible; that such a government and such a Constitution, as Patrick Henry of Virginia declared, ‘contradicts all the experience of the world’. The experiment was tried anyway.

Scientific findings and attitudes were common in those who invented the United States. The supreme authority, outranking any personal opinion, any book, any revelation, was – as the Declaration of Independence puts it – ‘the laws of nature and of nature’s GOD’. Dr Benjamin Franklin was revered in Europe and America as the founder of the new field of electrical physics. At the Constitutional Convention of 1789 John Adams repeatedly appealed to the analogy of mechanical balance in machines; others to William Harvey’s discovery of the circulation of the blood. Late in life Adams wrote, ‘All mankind are chemists from their cradles to their graves . . . The Material Universe is a chemical experiment.’ James Madison used chemical and biologi­cal metaphors in The Federalist Papers. The American revolution­aries were creatures of the European Enlightenment which provides an essential background for understanding the origins and purpose of the United States.

‘Science and its philosophical corollaries,’ wrote the American historian Clinton Rossiter

were perhaps the most important intellectual force shaping the destiny of eighteenth-century America . . . Franklin was only one of a number of forward-looking colonists who recognized the kinship of scientific method and democratic procedure. Free inquiry, free exchange of information, opti­mism, self-criticism, pragmatism, objectivity – all these ingre­dients of the coming republic were already active in the republic of science that flourished in the eighteenth century.

Thomas Jefferson was a scientist. That’s how he described him­self. When you visit his home at Monticello, Virginia, the moment you enter its portals you find ample evidence of his scientific interests – not just in his immense and varied library, but in copying machines, automatic doors, telescopes and other instru­ments, some at the cutting edge of early nineteenth-century tech­nology. Some he invented, some he copied, some he purchased. He compared the plants and animals in America with Europe’s, uncov­ered fossils, used the calculus in the design of a new plough. He mastered Newtonian physics. Nature destined him, he said, to be a scientist, but there were no opportunities for scientists in pre-revolutionary Virginia. Other, more urgent, needs took precedence. He threw himself into the historic events that were transpiring around him. Once independence was won, he said, later generations could devote themselves to science and scholarship.

Jefferson was an early hero of mine, not because of his scientific interests (although they very much helped to mould his political philosophy), but because he, almost more than anyone else, was responsible for the spread of democracy throughout the world. The idea – breathtaking, radical and revolutionary at the time (in many places in the world, it still is) is that not kings, not priests, not big city bosses, not dictators, not a military cabal, not a de facto conspiracy of the wealthy, but ordinary people, working together, are to rule the nations. Not only was Jefferson a leading theoretician of this cause; he was also involved in the most practical way, helping to bring about the great American political experiment that has, all over the world, been admired and emulated since.

He died at Monticello on 4 July 1826, fifty years to the day after the colonies issued that stirring document, written by Jefferson, called the Declaration of Independence. It was denounced by conservatives worldwide. Monarchy, aristocracy and state-supported religion – that’s what conservatives were defending then. In a letter composed a few days before his death, he wrote that it was the ‘light of science’ that had demonstrated that ‘the mass of mankind has not been born with saddles on their backs’, nor were a favoured few born ‘booted and spurred’. He had written in the Declaration of Inde­pendence that we all must have the same opportunities, the same ‘unalienable’ rights. And if the definition of ‘all’ was disgracefully incomplete in 1776, the spirit of the Declaration was generous enough that today ‘all’ is far more inclusive.

Jefferson was a student of history – not just the compliant and safe history that praises our own time or country or ethnic group, but the real history of real humans, our weaknesses as well as our strengths. History taught him that the rich and powerful will steal and oppress if given half a chance. He described the governments of Europe, which he saw at first hand as the American ambassa­dor to France. Under the pretence of government, he said, they had divided their nations into two classes: wolves and sheep. Jefferson taught that every government degenerates when it is left to the rulers alone, because rulers – by the very act of ruling -misuse the public trust. The people themselves, he said, are the only prudent repository of power.

But he worried that the people – and the argument goes back to Thucydides and Aristotle – are easily misled. So he advocated safeguards, insurance policies. One was the constitutional separa­tion of powers; accordingly, various groups, some pursuing their own selfish interests, balance one another, preventing any one of them from running away with the country: the Executive, Legisla­tive and Judicial Branches; the House and the Senate; the States and the Federal Government. He also stressed, passionately and repeatedly, that it was essential for the people to understand the risks and benefits of government, to educate themselves, and to involve themselves in the political process. Without that, he said, the wolves will take over. Here’s how he put it in Notes on Virginia, stressing how the powerful and unscrupulous find zones of vulnerability they can exploit:

In every government on earth is some trace of human weakness, some germ of corruption and degeneracy, which cunning will discover and wickedness insensibly open, culti­vate and improve. Every government degenerates when trusted to the rulers of the people alone. The people them­selves therefore are its only safe depositories. And to render even them safe, their minds must be improved . . .

Jefferson had little to do with the actual writing of the US Constitution; as it was being formulated, he was serving as American minister to France. When he read its provisions, he was pleased, but with two reservations. One deficiency: no limit was provided on the number of terms the President could serve. This, Jefferson feared, was a way for a President to become a king, in fact if not in law. The other major deficiency was the absence of a bill of rights. The citizen, the average person, was insufficiently protected, Jefferson thought, from the inevitable abuses of those in power.

He advocated freedom of speech, in part so that even wildly unpopular views could be expressed, so that deviations from the conventional wisdom could be offered for consideration. Personally he was an extremely amiable man, reluctant to criticize even his sworn enemies. He displayed a bust of his arch-adversary Alexander Hamilton in the vestibule at Monticello. Nevertheless, he believed that the habit of scepticism is an essential prerequisite for responsible citizenship. He argued that the cost of education is trivial compared to the cost of ignorance, of leaving the government to the wolves. He taught that the country is safe only when the people rule.

Part of the duty of citizenship is not to be intimidated into conformity. I wish that the oath of citizenship taken by recent immigrants, and the pledge that students routinely recite, included something like ‘I promise to question everything my leaders tell me’. That would be really to Thomas Jefferson’s point. ‘I promise to use my critical faculties. I promise to develop my independence of thought. I promise to educate myself so I can make my own judgements.’

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