It was sufficient for men to develop their sense of unity within their area of segregation. In those days they combined among themselves and fought against others. But it was this moral spirit of combination which was the true basis of their greatness, and this fostered their art, science and religion. At that early time the most important fact that man had to take count of was the fact of the members of one particular race of men coming in close contact with one another. Those who truly grasped this fact through their higher nature made their mark in history.
