It often takes more courage to change one's opinion than to stick to it.

The most dangerous untruths are truths slightly distorted.

One of the greatest creations of the human mind is the art of reviewing books without having read them.

It thunders, howls, roars, hisses, whistles, blusters, hums, growls, rumbles, squeaks, groans, sings, crackles, cracks, rattles, flickers, clicks, snarls, tumbles, whimpers, whines, rustles, murmurs, crashes, clucks, to gurgle, tinkles, blows, snores, claps, to lisp, to cough, it boils, to scream, to weep, to sob, to croak, to stutter, to lisp, to coo, to breathe, to clash, to bleat, to neigh, to grumble, to scrape, to bubble. These words, and others like them, which express sounds are more than mere symbols: they are a kind of hieroglyphics for the ear.

I cannot say whether things will get better if we change; what I can say is they must change if they are to get better.

To err is human also in so far as animals seldom or never err, or at least only the cleverest of them do so.

The pleasures of the imagination are as it were only drawings and models which are played with by poor people who cannot afford the real thing.