Two things awe me most, the starry sky above me and the moral law within me.

Sincerity is the indispensable ground of all conscientiousness, and by consequence of all heartfelt religion.

Enlightenment is the liberation of man from his self-caused state of minority... Supere aude! Dare to use your own understanding!is thus the motto of the Enlightenment.

From such crooked wood as that which man is made of, nothing straight can be fashioned.

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

Without man and his potential for moral progress, the whole of reality would be a mere wilderness, a thing in vain, and have no final purpose.

Life is the faculty of spontaneous activity, the awareness that we have powers.