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

Have the courage to use your own understanding!

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.

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

-- Chrysippus of Soli

Human nature is evil; its goodness is the result of deliberate effort.

-- Xunzi

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

Compassion is the foundation of morality.

-- Arthur Schopenhauer

The divine law commands rational consideration of existing things and reflection upon them.

-- Averroes