In religious terminology one often makes use of pairs of opposites, such as God and devil, heaven and hell, sin and virtue. Man begins acquiring knowledge by learning about pairs of opposites, and he cannot at once rise to that level where he comprehends life without these. In one way the idea is not correct; it is not right to conceive of God, who is all-powerful, as having another personality, an opposite power which one calls the devil. But at the same time it would puzzle a believer who considers God to be all goodness and all beauty if he were told that God also contains everything that is bad and evil. A devotee whose object is to raise his ideal of God as high as he can by devotion and worship, is hindered by being made to see that all that he considers wicked and ugly is also a part of God.