We are all under sentence of death, but with a sort of indefinite reprieve.

A mother's arms are made of tenderness and children sleep soundly in them.

I believe that pity is a law like justice, and that kindness is a duty like uprightness. That which is weak has a right to the kindness and pity of that which is strong. In the relations of man with the animals...there is a great ethic, scarcely perceived as yet, which will at length break through into the light, and which will be the corollary and the complement to humans ethics. Are there not here unsounded depths for the thinker? Is one to think oneself mad because one has the sentiment of universal pity in one's heart?

Because a fact seems strange to you, you conclude that it is not one. ... All science, however, commences by being strange. Science is successive. It goes from one wonder to another. It mounts by a ladder. The science of to-day would seem extravagant to the science of a former time. Ptolemy would believe Newton mad.

Diamonds are to be found only in the darkness of the earth, and truth in the darkness of the mind.

Creation lives, grows, and multiplies; man is but a witness.

Idleness is a mother. She has a son, robbery, and a daughter, hunger.