Il n'est pas certain que tout soit incertain. (Translation: It is not certain that everything is uncertain.)
I cannot judge my work while I am doing it. I have to do as painters do, stand back and view it from a distance, but not too great a distance. How great? Guess.
We are never in search of things, but always in search of the search.
Vanity is illustrated in the cause and effect of love, as in the case of Cleopatra.
Man is neither angel nor beast.
One must know oneself. If this does not serve to discover truth, it at least serves as a rule of life and there is nothing better.