My external sensations are no less private to my self than are my thoughts or my feelings. In either case my experience falls within my own circle, a circle closed on the outside... the whole world for each is peculiar and private to that soul.

The world is the best of all possible worlds, and everything in it is a necessary evil.

The man who has ceased to fear has ceased to care.

Adam knew Eve his wife and she conceived. It is a pity that this is still the only knowledge of their wives at which some men seem to arrive.

True penitence condemns to silence. What a man is ready to recall he would be willing to repeat.

His mind is so open - so open that ideas simply pass through it.

Metaphysics is the finding of bad reasons for what we believe on instinct.