Steven Pinker: The challenge of being rational

Canadian experimental psychologist , cognitive scientist, linguist, writer and professor at Harvard College, Steven Pinker is known for his vigorous and far-reaching advocacy of evolutionary psychology and computational theory of the mind. His academic specialisations are perception and language development in children. His four books for the general public - The Language Instinct, How the Mind Works, Words and Rules, and The Clean Slate - have won numerous awards and worldwide acclaim.