are not machines, when brought into different circumstances they may acquire different habits. It is not in the quality of their brains, but in the formation of their bodies that animal restrictions lie. The animal's action is limited by its bodily form and surroundings, and consequently it has little need for reflection. To reason would therefore be useless for it and would only lead to harm rather than to good.
Man, on the other hand, must possess this ability because he exercises discretion in the use of tools and weapons, which he chooses according to particular requirements. If he wants to kill the fleet hare, he takes the bow and arrow; if he meets the bear, he uses the axe, and if he wants to break open a certain fruit he takes a hammer. When threatened by danger, man must consider whether he shall run away or defend himself by fighting with weapons. This ability to think and to consider is indispensable to man in his use of artificial tools.
This strong connection between thoughts, language, and tools, each of which is impossible without the other, shows that they must have developed at the same time. How this development took place, we can only conjecture. Undoubtedly it was a change in the circumstances of life that changed men from our ape-like ancestors. Having migrated from the woods, the original habitat of apes, to the plain, man had to undergo an entire change of life. The difference between hands and feet must have developed then. Sociability and the ape-like hand, well adapted for grasping, had a due share in the new development. The first rough objects, such as stones or sticks, came to hand unsought, and were thrown away. This must have been
