Love or hatred must constantly increase between two persons who are always together; every moment fresh reasons are found for loving or hating better.

Love which economizes is never true love.

When one has no particular talent for anything, one takes to the pen.

The key to all sciences is unquestionably the question mark. To the word How? we owe most of our greatest discoveries. Wisdom in life may perhaps consist in asking ourselves on all occasions: Why?

Nobody loves a woman because she is handsome or ugly, stupid or intelligent. We love because we love.

The secret of a great success for which you are at a loss to account is a crime that has never been found out, because it was properly executed.

Nothing is so discreet as a young face, for nothing is less mobile; it has the serenity, the surface smoothness, and the freshnessof a lake. There is no character in women's faces before the age of thirty.