“Adults are only obsolete children.”

“Every once in a while, I get mad. 'The Lorax' came out of my being angry. The ecology books I'd read were dull... In 'The Lorax,' I was out to attack what I think are evil things and let the chips fall where they might.”

“Once-ler! You're making such smogulous smoke - my poor swomee swans, why they can't sing a note! No one can sing who has smog in his throat.”

“You ought to be thankful a hole heaping lot, for The places and people you're lucky you're not!”

“Plant a new Truffula. Treat it with care. Give it clean water. And feed it fresh air.”

“Away, you cut-purse rascal! you filthy bung, away! By this wine, I'll thrust my knife in your mouldy chaps, an you play the saucy cuttle with me. Away, you bottle-ale rascal! you basket-hilt stale juggler, you!”

“Cry havoc and let slip the dogs of war!”

“War is no strife To the dark house and the detested wife.”