Who said "Nature's law is survival of the most persistent."?

This quote is attributed to Sylvester.

Nature's law is survival of the most persistent. - Sylvester

"Nature's law is survival of the most persistent."

Sylvester Nature

"Sufferin' succotash!"

"That's all, folks!"

"I'm a-gonna get you yet, you wascally wabbit!"

"Thufferin' thuccotash, that wabbit makes me so mad!"

"Nature teaches us about beauty."

"Nature teaches us patience and wisdom"

"Sometimes it snows in April."

"Every town has a soul, and Twin Peaks has a troubled one."