The idea of God also fails to correspond to a true and immutable nature

Later, Descartes (AT 7.83–4) characterizes a TIN as having a unity such that it cannot be divided by the intellect. He thinks that having this feature shows that is hasn’t been simply put together by the intellect or imagination, and is thus a genuine nature. Accordingly, the idea of an existent lion does not correspond to a TIN because I can coherently conceive of a lion that doesn’t exist. Likewise I can coherently conceive of a maximally perfect island having one fewer coconut tree but one mo