But more than this, perhaps, man brought with him to the industrial occupations all the skill in fashioning force-appliances acquired through his intense, constant, and long-continued attention to the devising and manufacture of weapons. Man is relatively a feeble animal, but he made various and ingenious cutting, jabbing, and bruising appliances to compensate. His life was a life of strains, both giving and taking, and under the stress he had developed offensive and defensive weapons. There is, however, no radical difference, simply a difference in object and intensity of stimulus, between handling and making weapons and handling and making tools. So, when man was obliged to turn his attention to the agriculture and industries practiced by primitive woman he brought all his technological skill and a part of his technological interest to bear on the new problems. Women had been able to thrust a stick into the earth and drop the seed and await a meager harvest. When man turned his attention to this matter, his ingenuity eventually worked out a remarkable combination of the animal, mineral, and vegetable kingdoms: with the iron plow, drawn by the ox, he upturned the face of the earth, and produced food stuffs in excess of immediate demands, thus creating the conditions of culture. The destructive habits of the male nature were thus converted under the stress of diminishing nutrition to the habits represented primarily by the constructive female nature, and the inventive faculty developed through attention to destructive mechanical aids was now applied equally to the invention of constructive mechanical aids. SEX AND PRIMITIVE MORALITY The function of morality is to regulate the activities of associated life so that all may have what we call fair play. It is impossible to think of morality aside from expressions of force, primarily physical force. "Thou shalt not kill; thou shalt not steal; thou shalt not bear false witness; thou shalt not commit adultery; thou shalt not remove the ancient landmark;" and all approvals and disapprovals imply that the act in question has affected or will affect the interest of others, or of society at large, for better or for worse. And since morality goes back so directly to forms of activity and their regulation, we may expect to find that the motor male and the more stationary female have had a different relation to the development of a moral code.