“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.”

“Why, universal plodding poisons up The nimble spirits in the arteries, As motion and long-during action tires The sinewy vigor of the traveller.”

“So shaken as we are, so wan with care,Find we a time for frighted peace to pantAnd breathe short-winded accents of new broilsTo be commenced in stronds afar remote.”

“Some burn damp faggots, others may consumeThe entire combustible world in one small roomAs though dried straw, and if we turn aboutThe bare chimney is gone black outBecause the work had finished in that flare.”