As far as humanity is concerned, the summit of knowing is knowing that you do not know. Such was the expressed conclusion of, to name only a few, the Buddha, Confucius, Socrates, St Paul, Montaigne and the Indian saint, Swami Ramdas. Wisdom is so far from being knowledge in the usual sense, of knowing many ‘things’, that one of the only pieces of advice offered by wisdom traditions is to value not-knowing.