The brute necessity of believing something so long as life lasts does not justify any belief in particular.

Those who cannot remember the past are condemned to repeat it.

My atheism, like that of Spinoza, is true piety towards the universe and denies only gods fashioned by men in their own image, to be servants of their human interests.

A way foolishness has of revenging itself is to excommunicate the world.

The world is a perpetual caricature of itself; at every moment it is the mockery and the contradiction of what it is pretending to be.

Experience seems to most of us to lead to conclusions, but empiricism has sworn never to draw them.

We do right enough darling, if we go wrong together.