As I take up my pen I feel myself so full, so equal to my subject, and see my book so clearly before me in embryo, I would almost like to try to say it all in a single word.

Man is a masterpiece of creation, if only because no amount of determinism can prevent him from believing that he acts as a free being.

The most entertaining surface on earth is the human face.

Above all things expand the frontiers of science: without this the rest counts for nothing.

Theologians always try to turn the Bible into a book without common sense.

I am convinced we do not only love ourselves in others but hate ourselves in others too.

Never undertake anything unless you have the heart to ask Heaven's blessing on your undertaking.