Of all the evil spirits abroad at this hour in the world, insincerity is the most dangerous.

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

Ignorance is the dominion of absurdity.

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.

Instruction does not prevent wasted time or mistakes; and mistakes themselves are often the best teachers of all.

A person possessed with an idea cannot be reasoned with.

That which especially distinguishes a high order of man from a low order of man, that which constitutes human goodness, human nobleness, is surely not the degree of enlightenment with which men pursue their own advantage; but it is self-forgetfulness; it is self-sacrifice; it is the disregard of personal pleasure, personal indulgence, personal advantage, remote or present, because some other line of conduct is more right.