‘Read monkeys for pre-existence’ wrote the twenty-nine-year-old Darwin in one of his notebooks, pondering Plato’s assertion that our ‘imaginary ideas’ derive from the pre-existence of the soul. Two years earlier, when HMS Beagle had returned from its circumnavigation of the world, Darwin was still a creationist, albeit one who had entertained doubts. Keen to capitalise on his wide-rangin ... (read more)