People buy their necessities in shops and have to pay dearly for them because they have to assist in paying for what is also on sale there but only rarely finds purchasers: the luxury and amusement goods. So it is that luxury continually imposes a tax on the simple people who have to do without it.

Every attainment, every step forward in knowledge, follows from courage, from hardness against oneself, from cleanliness in relation to oneself.

Interest in Education will acquire great strength only from the moment when belief in a God and His care is renounced, just as the art of healing could only flourish when the belief in miracle cures ceased.

This demand follows from an insight that I was the first to articulate: that there are no moral facts.

Death. The certain prospect of death could sweeten every life with a precious and fragrant drop of levity- and now you strange apothecary souls have turned it into an ill-tasting drop of poison that makes the whole of life repulsive.

Whoever deliberately attempts to insure confidentiality with another person is usually in doubt as to whether he inspires that person's confidence in him. One who is sure that he inspires confidence attaches little importance to confidentiality.

You want to be paid as well, you virtuous! You want reward for virtue, and heaven for earth, and eternity for your today?