Nothing is so difficult as not deceiving oneself.  Ludwig Wittgenstein had a point, and so did Julius Caeser when he said that men willingly believe what they wish. Not just politicians either. This delightful sentence from Charles Dickens’ Nicholas Nickleby illustrates the idea perfectly: “What do you mean, Phib?” asked Miss Squeers, looking in her own little glass, where, like most of us, she saw – not herself, but the reflection of some pleasant image in her own brain.”

Does anyone else have any favourite quotes about self-deception?