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

Truth only smells sweet forever, and illusions, however innocent, are deadly as the canker worm.

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.

Fear is the parent of cruelty.

In every department of life--in its business and in its pleasures, in its beliefs and in its theories, in its material developments and in its spiritual connections--we thank God that we are not like our fathers.

The solitary side of our nature demands leisure for reflection upon subjects on which the dash and whirl of daily business, so long as its clouds rise thick about us, forbid the intellect to fasten itself.

Philosophy goes no further than probabilities, and in every assertion keeps a doubt in reserve.