Who said "It's a pretty good life if you don't weaken."?

This quote is attributed to Ford Prefect.

It's a pretty good life if you don't weaken. - Ford Prefect

"It's a pretty good life if you don't weaken."

Ford Prefect Perseverance

Character in The Hitchhiker's Guide to the Galaxy

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"I may be a sorry case, but I don't write jokes in base thirteen."

"You know what they call a Quarter Pounder with Cheese in Paris?"

"The answer is a towel."

"Exactly! Between you, me, and that spoon, it's completely governed by the Government!"

"Perseverance is the key to success."

"Don't give up on what you believe in."

"I've been through worse."

"You learn to live with the pain."