No punishment has ever possessed enough power of deterrence to prevent the commission of crimes.

Scientific and philosophic truth have parted company.

... the loss of belief in future states is politically, though certainly not spiritually, the most significant distinction betweenour present period and the centuries before. And this loss is definite. For no matter how religious our world may turn again, or how much authentic faith still exists in it, or how deeply our moral values may be rooted in our religious systems, the fear of hell is no longer among the motives which would prevent or stimulate the actions of a majority.

Poets are the only people to whom love is not only a crucial, but an indispensable experience, which entitles them to mistake it for a universal one.

This inability to think created the possibility for many ordinary men to commit evil deeds on a gigantic scale, the like of which had never been seen before. The manifestation of the wind of thought is not knowledge but the ability to tell right from wrong, beautiful from ugly. And I hope that thinking gives people the strength to prevent catastrophes in these rare moments when the chips are down.

There is no lasting happiness outside the prescribed cycle of painful exhaustion and pleasurable regeneration, and whatever throws this cycle out of balance – poverty and misery where exhaustion is followed by wretchedness instead of regeneration, or great riches and an entirely effortless life where boredom takes the place of exhaustion and where the mills of necessity, of consumption and digestion, grind an impotent human body mercilessly and barrenly to death – ruins the elemental happiness that comes from being alive.

... the will always wills to do something and thus implicitly holds in contempt sheer thinking, whose whole activity depends on "doing nothing.