The fourfold root of the principle of sufficent reason is "Anything perceived has a cause. All conclusions have premises. All effects have causes. All actions have motives.
Arthur SchopenhauerThe cause of laughter is simply the sudden perception of the incongruity between a concept and the real project.
Arthur SchopenhauerReason deserves to be called a prophet; for in showing us the consequence and effect of our actions in the present, does it not tell us what the future will be?
Arthur SchopenhauerFirst the truth is ridiculed. Then it meets outrage. Then it is said to have been obvious all along.
Arthur SchopenhauerIf two men who were friends in their youth meet again when they are old, after being separated for a life-time, the chief feeling they will have at the sight of each other will be one of complete disappointment at life as a whole; because their thoughts will be carried back to that earlier time when life seemed so fair as it lay spread out before them in the rosy light of dawn, promised so much — and then performed so little.
Arthur Schopenhauer