Who said "To try is to risk failure. Not to try is to guarantee it."?

This quote is attributed to Snoopy.

To try is to risk failure. Not to try is to guarantee it. - Snoopy

"To try is to risk failure. Not to try is to guarantee it."

Snoopy Courage

"I think I'm dying. Send for a doctor immediately!"

"Rats! Another day, another disappointment."

"Sometimes I lie awake at night and ask, 'Is life a multiple choice test or an essay?' Then a dog barks and I realize it doesn't matter."

"I love mankind. It's people I can't stand."

"Never let fear stop you from chasing your dreams."

"Courage is being afraid but doing it anyway."

"Sometimes you gotta do what you gotta do."

"Sometimes you have to be the monster to stop the monsters."