“Thus the will to live everywhere preys upon itself, and in different forms is its own nourishment, till finally the human race, because it subdues all the others, regards nature as a manufactory for its own use. Yet even the human race...reveals in itself with most terrible distinctness this conflict, this variance of the will with itself; and we find homo homini lupus.”

“The actual life of a thought lasts only until it reaches the point of speech...As soon as our thinking has found words it ceases to be sincere...When it begins to exist in others it ceases to live in us, just as the child severs itself from its mother when it enters into its own existence.”

“Men best show their character in trifles, where they are not on their guard. It is in the simplest habits, that we often see the boundless egotism which pays no regard to the feelings of others and denies nothing to itself.”

“Human life must be some kind of mistake. The truth of this will be sufficiently obvious if we only remember that man is a compound of needs and necessities hard to satisfy; and that even when they are satisfied, all he obtains is a state of painlessness, where nothing remains to him but abandonment to boredom. This is direct proof that existence has noreal value in itself; for what is boredom but the feeling of the emptiness of life? If life—the craving for which is the very essence of our being—were possessed of any positive intrinsic value, there would be no such thing as boredom at all: mere existence would satisfy us in itself, and we should want for nothing.”

“If children were brought into the world by an act of pure reason alone, would the human race continue to exist? Would not a man rather have so much sympathy with the coming generation as to spare it the burden of existence, or at any rate not take it upon himself to impose that burden upon it in cold blood?”

“The true basis and propaedeutic for all knowledge of human nature is the persuasion that a man's actions are, essentially and as a whole, not directed by his reason and its designs; so that no one becomes this or that because he wants to, though he want to never so much, but that his conduct proceeds from his inborn and inalterable character, is narrowly and in particulars determined by motivation, and is thus necessarily the product of these two factors.”

“Nevertheless, let no one boast. Just as every man, though he be the greatest genius, has very definite limitations in some one sphere of knowledge, and thus attests his common origin with the essentially perverse and stupid mass of mankind, so also has every man something in his nature which is positively evil. Even the best, nay the noblest, character will sometimes surprise us by isolated traits of depravity; as though it were to acknowledge his kinship with the human race, in which villainy--nay, cruelty--is to be found in that degree.”