Wild animals never kill for sport. Man is the only one to whom the torture and death of his fellow creatures is amusing in itself.

The best that we can do for one another is to exchange our thoughts freely; and that, after all, is about all.

Morality, when vigorously alive, sees farther than intellect, and provides unconsciously for intellectual difficulties.

The superstition of science scoffs at the superstition of faith.

Carelessness is inexcusable, and merits the inevitable sequence.

As we advance in life, we learn the limits of our abilities.

We enter the world alone, we leave it alone.