Man is said to be a reasoning animal. I do not know why he has not been defined as an affective or feeling animal. Perhaps that which differentiates him from other animals is feeling rather than reason. More often I have seen a cat reason than laugh or weep. Perhaps it weeps or laughs inwardly - but then perhaps, also inwardly, the crab resolves equations of the second degree.

There are people who are so full of common sense that they haven't the slightest cranny left for their own sense.

It is not the shilling I give you that counts, but the warmth that it carries with it from my hand.

Science is the most intimate school of resignation and humility, for it teaches us to bow before the seemingly most insignificant of facts.

For it is the suffering flesh, it is suffering, it is death, that lovers perpetuate upon the earth. Love is at once the brother, son, and father of death, which is its sister, mother, and daughter. And thus it is that in the depth of love there is a depth

Life is doubt, and faith without doubt is nothing but death.

If a person never contradicts himself, it must be that he says nothing.