To lose the only creature in all his world who ever had manifested love and affection for him was the greatest tragedy he had ever known. - Edgar Rice Burroughs

Tarzan of the Apes, young and savage beast of the jungle, wondered at the cruel brutality of his own kind. Sheeta, the leopard, alone of all the jungle folk, tortured his prey. The ethics of all the others meted a quick and merciful death to their victims.
Tarzan had learned from his books but scattered fragments of the ways of human beings.

The time has arrived when patience becomes a crime and mayhem appears garbed in a manner of virtue

I was armed only with a hunting knife, and this I whipped from its scabbard as Kho leaped toward me. He was a mighty beast, mightily muscled, and the urge that has made males fight since the dawn of life on earth filled him with the blood-lust and the thirst to slay; but not one whit less did it fill me with the same primal passions. Two abysmal beasts sprang at each other’s throats that day beneath the shadow of earth’s oldest cliffs—the man of now and the man-thing of the earliest, forgotten then, imbued by the same deathless passion that has come down unchanged through all the epochs, periods and eras of time from the beginning, and which shall continue to the incalculable end—woman, the imperishable Alpha and Omega of life.