Never mind your happiness; do your duty.

So I should say that civilizations begin with religion and stoicism: they end with scepticism and unbelief, and the undisciplined pursuit of individual pleasure. A civilization is born stoic and dies epicurean.

Those who have suffered much become very bitter or very gentle.

To give life a meaning, one must have a purpose larger than self.

Does history warrant the conclusion that religion is necessary to morality - that a natural ethic is too weak to withstand the savagery that lurks under civilization and emerges in our dreams, crimes and wars? ... There is no significant example in history, before our time, of a society successfully maintaining moral life without the aid of religion.

Every science begins as philosophy and ends as art; it arises in hypothesis and flows into achievement.

Tolerance grows only when faith loses certainty; certainty is murderous.