One who makes himself a worm cannot complain afterwards if people step on him.

Act so that the maxim of your act could be made the principle of a universal law.

There can be no doubt that all our knowledge begins with experience.

Beneficence is a duty; and he who frequently practices it, and sees his benevolent intentions realized comes, at length, really to love him to whom he has done good.

Enlightenment is man's emergence from his self-imposed nonage. Nonage is the inability to use one's own understanding without another's guidance. This nonage is self-imposed if its cause lies not in lack of understanding but in indecision and lack of courage to use one's own mind without another's guidance. Dare to know!

The inscrutable wisdom through which we exist is not less worthy of veneration in respect to what it denies us than in respect to what it has granted.

The busier we are, the more acutely we feel that we live, the more conscious we are of life.