Two things fill the mind with ever new and increasing admiration and reverence: the starry heavens above me and the moral law within me.

I had to deny knowledge in order to make room for faith.

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

Treat humanity, in your own person or in another, always as an end and never merely as a means.

Reserve your right to think, for even to think wrongly is better than not to think at all.

-- Hypatia

It is not I who conform to the stars; the stars conform to me.

-- Plotinus

Everything depends on your judgment, and that judgment rests with you.

-- Marcus Aurelius

The wise man is free from passions, not because he does not feel, but because his judgments are correct.

-- Chrysippus of Soli

Neither a man nor a crowd nor a nation can be trusted to act humanely or to think sanely under the influence of a great fear.

-- Bertrand Russell

I have striven not to laugh at human actions, not to weep at them, nor to hate them, but to understand them.

-- Benedictus de Spinoza