"There is a void in the heart of every man which only God can fill."

"If we submit everything to reason, our religion will have nothing in it mysterious or supernatural."

"Man is equally incapable of seeing the nothingness from which he emerges and the infinity in which he is engulfed."

"The only good thing in life is to be able to choose one's friends."

"The present is never our end. The past and present are our means, the future alone is our end."