According to this principle, the reality of the cause must be greater than or equal to the reality of the effect. The idea of God has infinite reality and, by theory, the only cause of this infinite idea can only be God. With all this said, the reality of God is the only plausible cause to the reality of the idea of God. Descartes gives another proof in Meditation Five where he has reasoned that a triangle must have all the properties he assigns to it, because the triangle exists as an idea in his mind and he clearly and distinctly perceives all these properties. He then reasons, by analogy, that God exists as an idea in his mind and he clearly and distinctly perceives all of his qualities. One of these qualities is existence, so it follows from his clear and distinct perception that God must exist. If existence is the essence of God, then God would not be God if he did not exist, just as a triangle would not be a triangle if it were not three-sided. At the very least, then, the existence of God must be as certain as the properties of mathematical and geometrical objects since he can prove them in the same way. Having concluded that God must necessarily exist, Descartes goes further and then asks how he received the idea of God. He could have not invented the idea. Therefore, the idea must be innate which, according to Descartes, means that God must have created him…