What really interests me is whether God had any choice in the creation of the World.

If at first the idea is not absurd, then there is no hope for it.

He who finds a thought that lets us a little deeper into the eternal mystery of nature has been granted great peace.

Qualities I sought in a scientific theory were naturalness, inner perfection and logical simplicity from an aesthetic approach.

The more a man is imbued with the ordered regularity of all events the firmer becomes his conviction that there is no room left by the side of this ordered regularity for causes of a different nature. For him neither the rule of human nor the rule of divine will exist as an independent cause of natural events.

Nature hides her secrets because of her essential loftiness, but not by means of ruse.

Opinions about obviousness are to a certain extent a function of time.