Deductive arguments: Descartes - concept of God as supremely perfect being

For Descartes, God was the most perfect being, who possessed all perfections and the very best forms of positive attributes. Were he not to possess the perfection of each and every positive attribute (e.g. omnibenevolence, omniscience, omnipotence), then he would not be the supremely perfect being

The idea of triangles
To think of a triangle is to necessarily think of a shape that has three sides and interior angles adding up to 180 degrees. It does not mean that this triangle exists in any external reality, but in order to think about the idea of a triangle there needs to be a set of criteria that can be understood by all and which forms part of the definition of a triangle

Similarly with God, it is impossible to think of God…