“When one door of happiness closes, another opens, but often we look so long at the closed door that we do not see the one that has been opened for us.”

The greatness of art is not to find what is common but what is unique.

Three may keep a secret, if two of them are dead.

Everything that happens once can never happen again. But everything that happens twice will surely happen a third time.

The heresy of one age becomes the orthodoxy of the next.

What do we live for, if it is not to make life less difficult for each other?

The important thing is not to stop questioning.