You have to remember, John Locke (1632-1734), was born almost sixty years before David Hume (1711-1776). If you are looking for something universal, these Imperial Empiricists left legacies and reformed the basis of Western philosophical thought. Instrumental to liberalism, empiricism, skepticism, and naturalism, contemporary philosopher; Julian Baggini has a platform attached to the Enlightenment. Julian's neuroscience background and his theory of mind thesis is an ego trick. Mnemonically I think of his position as an ego "hat trick" without the hat.1 His 2011 book, The Ego Trick was excellent and I recommend the read. How far have we come since David Hume's enquiry on human understanding or Montaigne's Essays?