If 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.

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.

Materialism is the philosophy of the subject who forgets to take account of himself.

Newspapers are the second hand of history.

Money alone is absolutely good, because it is not only a concrete satisfaction of one need in particular; it is an abstract satisfaction of all.

Apart from man, no being wonders at its own experience.

This is the case with many learned persons; they have read themselves stupid.