Life holds only one tragedy, ultimately: not to have been a saint.
Love is rarer than genius itself. And friendship is rarer than love.
A great philosophy is not one that passes final judgments and establishes ultimate truth. It is one that causes uneasiness and starts commotion.
It is the essence of genius to make use of the simplest ideas.
We shall never know how many acts of cowardice have been motivated by the fear of appearing not sufficiently progressive.
I prefer a saint with faults to a sinner with none.