As to these Aryan migrations, we do not know when a large body crossed the Himalaya Mountains, and settled on the banks of the Indus, but probably it was at least two thousand years before Christ. Northern India had great attractions to those hardy nomadic people, who found it so difficult to get a living during the long winters of their primeval home. India was a country of fruits and flowers, with an inexhaustible soil, favorable to all kinds of production, where but little manual labor was required,--a country abounding in every kind of animals, and every kind of birds; a land of precious stones and minerals, of hills and valleys, of majestic rivers and mountains, with a beautiful climate and a sunny sky. These Aryan conquerors drove before them the aboriginal inhabitants, who were chiefly Mongolians, or reduced them to a degrading vassalage. The conquering race was white, the conquered was dark, though not black; and this difference of color was one of the original causes of Indian caste. It was some time after the settlement of the Aryans on the banks of the Indus and the Ganges before the Vedas were composed by the poets, who as usual gave form to religious belief, as they did in Persia and Greece. These poems, or hymns, are pantheistic. "There is no recognition," says Monier Williams, "of a Supreme God disconnected with the worship of Nature." There was a vague and indefinite worship of the Infinite under various names, such as the sun, the sky, the air, the dawn, the winds, the storms, the waters, the rivers, which alike charmed and terrified, and seemed to be instinct with life and power. God was in all things, and all things in God; but there was no idea of providential agency or of personality.