“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.”

“Let me be ignorant, and in nothing good, but graciously to know I am no better.”

“Lord Bacon told Sir Edward Coke when he was boasting, The less you speak of your greatness, the more shall I think of it.”

“So holy and so perfect is my love, And I in such a poverty of grace, That I shall think it a most plenteous crop To glean the broken ears after the man That the main harvest reaps.”