As long as any man exists, there is some need of him.

The condition which high friendship demands is ability to do without it.

There are people who have an appetite for grief; pleasure is not strong enough and they crave pain. They have mithridatic stomachs which must be fed on poisoned bread, natures so doomed that no prosperity can sooth their ragged and dishevelled desolation.

Nothing great was ever achieved without enthusiasm.

Science does not know its debt to imagination. Goethe did not believe that a great naturalist could exist without this faculty.

What is well done, I feel as if I did; what is ill-done, I reck not of.

The soul of God is poured into the world through the thoughts of men.