Two things fill the mind with ever new and increasing admiration and awe, the oftener and more steadily we reflect on them: the starry heavens above and the moral law within.

Thoughts without content are empty, intuitions without concepts are blind.

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

If education is to develop human nature so that it may attain the object of its being, it must involve the exercise of judgment.

Act so as to use humanity, yourself and others, always as an end and never as a means to an end.

The only objects of practical reason are therefore those of good and evil. For by the former is meant an object necessarily desired according to a principle of reason; by the latter one necessarily shunned, also according to a principle of reason.

Better the whole people perish than that injustice be done