projection

noun [抽象名词]估算，预测；投射，投影；（声音的）发送，放开；（思想感情的）体现，形象化；投射（不自觉地把自己的欲念等加诸他人）；凸出物，隆起物；（地球或天体在平面上的）投射；投影图；规划

The idea of God is a projection of humans' need to have something greater than themselves.
人类需要有强于自身的形象，上帝就是这个想法的投射。