Problems are only opportunities in disquise.

It is the business of the future to be dangerous.

Religion is the last refuge of human savagery.

The study of mathematics is apt to commence in disappointment.

The art of progress is to preserve order amid change and to preserve change amid order.

Nature gets credit which should in truth be reserved for ourselves: the rose for its scent, the nightingale for its song; and the sun for its radiance. The poets are entirely mistaken. They should address their lyrics to themselves and should turn them into odes of self congratulation on the excellence of the human mind.

Value is coextensive with reality.