We have to be careful that in throwing out the devil, we don't throw out the best part of ourselves.

Without the perpetual counterfeiting of the universe by number, man could not continue to live

What do you believe in?--In this, that the weights of all things must be determined anew.

I welcome all the signs indicating that a more manly and warlike age is commencing, which will, above all, bring heroism again into honour!

Without art we would be nothing but foreground and live entirely in the spell of that perspective which makes what is closest at hand and most vulgar appear as if it were vast, and reality itself.

The hour when you say, "What does my happiness matter? It is poverty and filth, and a wretched complacency. Yet my happiness should justify existence itself!

The scaffolding must be removed once the house is built.