Who said "Adventure is what you make of it before it ends."?

This quote is attributed to Marvin the Martian.

Adventure is what you make of it before it ends. - Marvin the Martian

"Adventure is what you make of it before it ends."

Marvin the Martian Adventure

"This makes me very angry, very angry indeed!"

"Where's the kaboom? There was supposed to be an earth-shattering kaboom!"

"Oh dear, what a mess."

"I'm very busy. I'm destroying your planet."

"The greatest adventure is life itself."

"The adventure of life begins with a single step."

"Adventure finds you when you stop running."

"Fortune and glory, kid."