... can form in my mind an infinity of other figures of which not the least suspicion can be had that they have ever come within the scope of my senses'3, these figure's many properties can be discovered through reason and be perceived clearly and distinctly in the mind believes Descartes. As Descartes believes clear and distinct ideas to be indubitable 'it follows that all that I recognize clearly and distinctly as belonging to that thing does indeed belong to it'4. This method is then applied to a proof of God, as Descartes recognises the properties of God. A parallel of the above passage about square can be seen in Descartes augment 'that existence can no more be separated from the essence of God than the fact that the sum of its three angles is equal two right angles can be separated from the essence of a triangle'5. Descartes attempt to prove ...

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