O Solitude! You are my home, Solitude! - Friedrich Nietzsche

To see others suffer does one good, to make others suffer even more: this is a hard saying but an ancient, mighty, human, all-too-human principle which even the apes might subscribe; for it has been said that in devising bizarre cruelties they anticipate man and are, as it were his "prelude."

Of all evil I deem you capable: Therefore I want good from you. Verily, I have often laughed at the weaklings who thought themselves good because they had no claws.

...to the priestly class — decadence is no more than a means to an end. Men of this sort have a vital interest in making mankind sick, and in confusing the values of "good" and "bad," "true" and "false" in a manner that is not only dangerous to life, but also slanders it.