And this, Cebes, is the reason why the true lovers of knowledge are temperate and brave; and not for the reason that the world gives. For not in that way does the soul of a philosopher reason. ...Never fear, Simmias and Cebes, that a soul which has been thus nurtured and has had these pursuits, will at her departure from the body be scattered and blown away by the winds and be nowhere and nothing. The Trials Of Socrates

Many go out for wool, and come home shorn themselves. Don Quixote

It is easy to be wise after the event. The Complete Sherlock Holmes

“I am dirty, Milena, endlessly dirty, that is why I make such a fuss about cleanliness. None sing as purely as those in deepest hell; it is their singing we take for the singing of angels.” (26 August 1920) Letters To Milena