Man, the Destroyer
Via BBC
On the one hand, man is akin to many species of animals in that he fights his own species. But on the other hand, he is, among the thousands of species that fight, the only one in which fighting is disruptive… Man is the only species that is a mass murderer, the only misfit in his own society.
Niko Tinbergen - 1968
The Anatomy of Human Destructiveness
[…] man’s aggresive behavior as manifested in war, crime, personal quarrels, and all kinds of destructive, and sadistic behavior is due to a phylogenetically programmed, innate instinct which seeks for discharge and waits for the proper occasion to be expressed. […]
[…] Only man seems to take pleasure in destroying life without any reason or purpose other than that of destroying. To put it more generally, only man appears to be destructive beyond the aim of defense or of attaining what he needs. […]
Quoted from the book The Anatomy of Human Destructiveness by Erich Fromm