Whatever does not kill me makes me stronger.

To produce music is also in a sense to produce children.

You must be born for your physician, otherwise you are bound to perish because of your physician.

What do you regard as most humane? To spare someone shame.

Whatever a theologian regards as true must be false: there you have almost a criterion of truth.

The so-called paradoxes of an author, to which a reader takes exception, often exist not in the author's book at all, but rather in the reader's head.

I am driven out of fatherlands and motherlands. Thus I now love only my children's land, yet undiscovered, in the farthest sea; for this I bid my sails search and search.