"Thinking evil is making evil."

"Wisdom sets bounds even to knowledge."

"This world is the will to power - and nothing besides!"

"He who fights too long against dragons becomes a dragon himself; and if you gaze too long into the abyss, the abyss will gaze into you."

"Maturity consists in having rediscovered the seriousness one had as a child at play."

"He who makes no secret of himself, enrages."

"It is a pleasure to give advice, humiliating to need it, normal to ignore it."

"In spite of everything, I still believe that people are really good at heart."

"For though I do not ask for aid, we need it."

"A friend should be one in whose understanding and virtue we can equally confide, and whose opinion we can value at once for its justness and its sincerity."

"A man is infinitely more complicated than his thoughts."

"Winter is come and gone, But grief returns with the revolving year."