Who said "War is nature's way of weeding out the weak."?

This quote is attributed to Cartman.

War is nature's way of weeding out the weak. - Cartman

"War is nature's way of weeding out the weak."

Cartman War

"Screw you guys, I'm going home!"

"I'm not fat, I'm just big-boned!"

"You will respect my authority!"

"Hippies, they're everywhere!"

"Some battles are worth fighting."

"Sometimes you have to become the monster to stop the monsters."

"Skynet sent me back through time to kill you."

"War teaches us the value of peace."