What is the famous quote in The Lorax?

A couple of quotes from The Lorax by Dr. Suess are:

"I am the Lorax, I speak for the trees. I speak for the trees, for the trees have no tongues."

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"He'll tell you perhaps...

If you're willing to pay"

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"You won't see the Once-ler.

Don't knock at his door."

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"He was shortish, and oldish, and brownish, and mossy. And he spoke with a voice that was sharpish, and bossy."

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"UNLESS someone like you cares a whole awful lot, nothing's going to get better: it's not."