Who said "Nature holds secrets we're still learning."?

This quote is attributed to Tweety.

Nature holds secrets we're still learning. - Tweety

"Nature holds secrets we're still learning."

Tweety Nature

"I'm a tweety bird, that's me!"

"Suffering succotash! That's one angry cat."

"Hello, Doc!"

"Be vewy, vewy quiet... I'm hunting wabbits."

"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."