 Proof of 5. I know that whatever is given in experience has many parts (even if I may not be able to discern those parts by my senses), and so I know that it is not an absolute unity. But I can have this knowledge only if I know absolute unity, namely, something that is not many in any respect, not even in respect of its parts, for, in general, I can know that something is F in a certain respect, and not an F in some other respect, only if I know what it is for something to be an F without any qualification. (For example, I know that the two halves of a body, taken together, are not absolutely two, for taken one by one, they are not absolutely one, since they are also divisible into two halves, etc. But I can know this only because I know that for obtaining absolutely two things [and not just two multitudes of further things], I would have to have two things that in themselves are absolutely one.) Therefore, I know absolute unity.