New happiness too must be learned to bear.

He who believes in freedom of the will has never loved and never hated.

Whoever prefers the material comforts of life over intellectual wealth is like the owner of a palace who moves into the servants’ quarters and leaves the sumptuous rooms empty.

Genius points the way, talent takes it.

To accept reason is impossible if you don't already possess it.

We don't believe in rheumatism and true love until after the first attack.

Who doesn't know anything, has to believe everything.