Man represents a mutation of life wherein the intellect will get its chance to prove survival worth. It hasn’t done that yet, you understand. All sorts of life forms flourish grandly for a while and then die out. But universal time is a long time. Remember the giant reptiles flourished for forty million years. Man will have to better that record before he can truly say that intellect is superior to massive bulk and a thick hide.
They'd Rather Be Right - Chapter XIX