Numerous are the academic professors, but rare are wise and noble teachers.

The dog is very smart. He feels sorry for me because I receive so much mail; that's why he tries to bite the mailman.

Imagination is the most powerful force in the universe.

If everybody lived as I do, surely the writing of romance novels would never have come into being.

Knowledge of what is does not open the door directly to what should be.

.. free and responsible development of the individual, so that he may place his powers freely and gladly in the service of all mankind. There is no room in this for the divinization of a nation, of a class, let alone of an individual. Are we not all children of one father, as it is said in religious language?

In my experience, the best creative work is never done when one is unhappy.