 Once infused by God, the intellective form connects the previous forms inherent in the body of the embryo (vegetative and sensitive) and constitutes with them a human rational soul, “in much the same way as a quadrangle, which in fact contains two triangles would become a pentagon, if a triangle were added to one of its sides” (D43Q 34, 37; see also E 5, 42). The addition of the new triangle to the existing quadrangle—composite of two triangles—does not cause the corruption of the existing figures, but rather complements and completes them. In the case of the soul, it means that the vegetative and sensitive potentiae continue to be responsible for their operations after the infusion of the completive intellective potentia. The result is the thesis of a pluarlity of forms in the human soul.