One should die proudly when it is no longer possible to live proudly.

Not he is great who can alter matter, but he who can alter my state of mind.

"Faith" as an imperative is a veto against science-in praxi, it means lies at any price.

Full is the earth of the superfluous; marred is life by the many-too-many. May they be decoyed out of this life by the "life eternal"!

The demand to be loved is the greatest of all arrogant presumptions.

I am one thing, my writings are another.

So long as the spectator has to figure out the meaning of this or that person, or the presuppositions of this or that conflict of inclinations and purposes, he cannot become completely absorbed in the activities and sufferings of the chief characters or feel breathless pity and fear.