The man of the Paleolithic or Rough Stone Age was followed by the man of the Neolithic Age--the cliff dweller. He exchanged a home by the river for one higher up; secure in some elevated cliff, the Neolithic man lived, away from molesting beasts. Again, the stone weapons were greatly improved. No longer were they rough; on the contrary, they were now polished smooth. Ingenious from the beginning, man found that sharp edges of stone were more useful than blunt ones, that smooth handles were more convenient than irregular stones with no handles at all. For this reason, this period has been called the Smooth Stone Age. Other improvements no less momentous had been wrought. Food was now cooked, and as a result, man grew a little less ferocious. He had less fear of the wild beasts than before, and domesticated some of them. No longer was he wholly dependent upon such food as nature provided, for he had learned how to sow grain and gather it. He had learned how to fashion bowls and other receptacles of clay. He now buried his dead with weapons and other useful articles, proving that he believed that the dead still had need of such things. We must not, however, suppose that he believed in immortality, for the evidence shows that his conception of a hereafter was very vague. In most cases the care for and fear of the dead ceased a few years after their burial. Before the close of this period men had journeyed far from abject savagery. Finally we come to the Metal--sometimes called the Bronze--Age. The discovery of metal proved the greatest boon, for now it was possible to make sharp tools and weapons. Hitherto the mere cutting down of a tree had taken a prodigious time. With a bronze ax, it could be quickly accomplished. Progress made rapid strides after this invaluable discovery. Nor this alone. Having learned to domesticate the beasts, men passed from a purely hunting into a pastoral stage. Having learned to reap and sow, it became convenient to have a fixed habitation. Instead of dwelling apart, it proved safest to settle in hamlets or villages. In other words, man had become _civilized_, and with the dawn of civilization we find the dawn of history.