It hinders the creative work of the mind if the intellect examines too closely the ideas as they pour in.

There are evil spirits who suddenly fix their abode in man's unguarded breast, causing us to commit devilish deeds, and then, hurrying back to their native hell, leave behind the stings of remorse in the poisoned bosom.

Nothing, it is true, is more common than for both Science and Art to pay homage to the spirit of the age, and for creative taste to accept the law of critical taste.

Many a smiling face hides a mourning heart; but grief alone teaches us what we are.

In a narrow circle the mind contracts. Man grows with his expanded needs.

A pity about the people! they are brave enough comrades, but they have heads like a soapboiler's.

Stubbornness is not firmness.