You have enemies? Why, it is the story of every man who has done a great deed or created a new idea. It is the cloud which thunders around everything that shines. Fame must have enemies, as light must have gnats. Do no bother yourself about it; disdain. Keep your mind serene as you keep your life clear.

I am for religion, against religions.

There is will in the thought, there is none in the dream. The dream, which is completely spontaneous, takes and keeps, even in the gigantic and the ideal, the form of our mind. Nothing springs more directly and more sincerely from the very bottom of our souls than our unreflected and indefinite aspirations towards the splendours of destiny.

The wicked envy and hate; it is their way of admiring.

Astronomy, that micography of heaven, is the most magnificent of the sciences. ... Astronomy has its clear side and its luminous side; on its clear side it is tinctured with algebra, on its luminous side with poetry.

Nothing makes a man so adventurous as an empty pocket.

Vengeance comes from the individual and punishment from God.