'To thine own self be true.' From Polonius's words in Hamlet right up to Oprah, we are constantly urged to look within. Why is being authentic the ultimate aim in life for so many people, and why does it mean looking inside rather than out? Is it about finding the 'real' me, or something greater than me, even God? And should we welcome what we find?

Thought-provoking and with an astonishing range of references, On Being Authentic is a gripping journey into the self that begins with Socrates and Augustine. Charles Guignon asks why being authentic ceased to mean being part...