Nothing is more seductive for a man than his freedom of conscience, but nothing is a greater cause of suffering.
There is no virtue if there is no immortality.
You can't be angry with me, because I am a hundred times more severely punished than you, if only by the fact that I shall never see you again.
It's not miracles that generate faith, but faith that generates miracles.
One must first learn to live oneself before one blames others.
Man is a creative animal, doomed to strive toward a goal, engaged in full-time engineering.