Freedom is the alone unoriginated birthright of man, and belongs to him by force of his humanity.
Enlightenment is man's emergence from his self-incurred immaturity.
There is no virtue in penance and fasting which waste the body; they are only fanatical and monkish.
The existence of the Bible is the greatest blessing which humanity ever experienced.
The bad thing of war is, that it makes more evil people than it can take away.
By a lie a man throws away and, as it were, annihilates his dignity as a man. A man who himself does not believe what he tells another ... has even less worth than if he were a mere thing. ... makes himself a mere deceptive appearance of man, not man himself.