And now, he continued, we have been initiated into a method of fighting, which, I observe, all men naturally understand, just as in the case of other creatures each understands some method of fighting which it has not learned from any other source than from instinct: for instance, the bull knows how to fight with his horns, the horse with his hoofs, the dog with his teeth, the boar with his tusks. And all know how to protect themselves, too, against that from which they most need protection, and that, too, though they have never gone to school to any teacher.
Cyropaedia. Xenophon. Walter Miller (Translator). Cambridge, MA. 1914.
Sponsored by Perseus Project, Tufts University.
Funding provided by The Annenberg CPB/Project.