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The slippage between a scientific fact and moral exhortation is accomplished with remarkable ease in a world where people lack the confidence to speak in the language of right and wrong. But turning science into an arbiter of policy and behaviour only serves to confuse matters. Science can provide facts about the way the world works, but it cannot say very much about what it all means and what we should do about it. Yes, the search for truth requires scientific experimentation and the discovery of new facts; but it also demands answers about the meaning of those facts, and those answers can only be clarified through moral, philosophical investigation and debate.

If science is turned into a moralising project, its ability to develop human knowledge will be compromised. It will also distract people from developing a properly moral understanding of the problems that face humanity in the twenty-first century. Those who insist on treating science as a new form of revealed truth should remember Pascal’s words: ‘We know the truth, not only by reason, but also by the heart.’ via