Who said "The more I learn, the more I realize how much I don't know."?

This quote is attributed to Snoopy.

The more I learn, the more I realize how much I don't know. - Snoopy

"The more I learn, the more I realize how much I don't know."

Snoopy Education

"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."

"Education opens doors."

"Education opens doors to endless possibilities."

"I ain't got the education you got, bub."

"You can't put a price on history."