Who said "Nature demonstrates that only the strong survive."?

This quote is attributed to Aldrich Killian.

Nature demonstrates that only the strong survive. - Aldrich Killian

"Nature demonstrates that only the strong survive."

Aldrich Killian Nature

"We all crave a feeling of purpose, of legacy. What will people remember about you when you're gone?"

"The ability to let go is what separates the strong from the weak."

"I've spent years perfecting myself, becoming something greater than I was."

"Fear is just another obstacle to overcome."

"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."