The business of philosophy is not to give rules, but to analyze the private judgments of common reason.

The schematicism by which our understanding deals with the phenomenal world ... is a skill so deeply hidden in the human soul that we shall hardly guess the secret trick that Nature here employs.

How then is perfection to be sought? Wherein lies our hope? In education, and in nothing else.

Have the courage to use your own reason- That is the motto of enlightenment. "Foundations of the Metaphysics of Morals" (1785)

But although all our knowledge begins with experience, it does not follow that it arises from experience.

THERE ARE TWO THINGS that don't have to mean anything, one is music and the other is laughter.

In law a man is guilty when he violates the rights of others. In ethics he is guilty if he only thinks of doing so.