Two things awe me most, the starry sky above me and the moral law within me.
The bad thing of war is, that it makes more evil people than it can take away.
It is by his activities and not by enjoyment that man feels he is alive. In idleness we not only feel that life is fleeting, but we also feel lifeless.
Always treat people as ends in themselves, never as means to an end.
God, freedom, and immortality are untenable in the light of pure reason.
Among all nations, through the darkest polytheism glimmer some faint sparks of monotheism.