Even philosophers will praise war as ennobling mankind, forgetting the Greek who said: 'War is bad in that it begets more evil than it kills.'

Melancholy characterizes those with a superb sense of the sublime.

Whereas the beautiful is limited, the sublime is limitless, so that the mind in the presence of the sublime, attempting to imagine what it cannot, has pain in the failure but pleasure in contemplating the immensity of the attempt

Seek not the favor of the multitude; it is seldom got by honest and lawful means. But seek the testimony of few; and number not voices, but weigh them.

All human knowledge begins with intuitions, proceeds from thence to concepts, and ends with ideas.

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.