“In love, one and one are one.”

“It answers the question that was tormenting you: my love, you are not 'one thing in my life' - not even the most important - because my life no longer belongs to me because...you are always me.”

“Man is condemned to be free; because once thrown into the world, he is responsible for everything he does. It is up to you to give [life] a meaning.”

“For many have but one resource to sustain them in their misery, and that is to think, Circumstances have been against me, I was worthy to be something much better than I have been. I admit I have n...”

“She smiled and said with an ecstatic air: "It shines like a little diamond","What does?""This moment. It is round, it hangs in empty space like a little diamond; I am eternal.”

“Life has no meaning, the moment you lose the illusion of being eternal.”

“I do not know what I may appear to the world, but to myself I seem to have been only like a boy playing on the sea-shore, and diverting myself in now and then finding a smoother pebble or a prettie...”

“To know the history of science is to recognize the mortality of any claim to universal truth. ”

“The scientist only imposes two things, namely truth and sincerity, imposes them upon himself and upon other scientists.”