Who said "Survival of the fittest is not a theory, it's destiny."?

This quote is attributed to Cheetah.

Survival of the fittest is not a theory, it's destiny. - Cheetah

"Survival of the fittest is not a theory, it's destiny."

Cheetah Nature

"I always get what I want, and I want everything."

"You could never understand what it's like to be invisible."

"I'm not going back to being ordinary. Never."

"They always looked right through me."

"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."