Rationalism

Over the long span of human existence, different cultures have held varying notions as to how responsible we are for our own thoughts and beliefs. Before the dawn of the Abrahamic religions, and in places untouched by these faiths, it tended to be the rule that individual members of the group could only be understood as parts of the whole, or in the grander cosmic scheme of things. The ascendence of Christianity in Europe, with its idea of the indivisible soul, tilted matters more towards a belief in individual agency and accountability. This concept, secularised by Descartes, who gave us the commanding rational ego, has proved resilient ever since, despite the best efforts of Freud, neuroscience and gene selection theory to dethrone it.

A.J. Ayer and other thinkers linked to the Vienna Circle famously contradicted themselves. A claim such as ‘all truths are scientific truths’ cannot itself be verified scientifically. So whether the assertion is true or false, it follows that there is at least one fact which isn’t a physical fact. Thus metaphysics buries its own undertakers. Yet Ayer’s ideas survive today in mutated form and influence other subjects besides philosophy. Though partly infected by relativism, the humanities have witnessed a growing impulse to redescribe everything in material and supposedly objective terms. The move is reductive. It involves restricting us to a world of causes rather than reasons, sounds rather than music.