Mind (n.) is able to know only what it has produced.
Mind (n.) is what is left standing when you doubt everything: the one thing that, doubting all else, cannot doubt itself.
Mind (n.) is known before any body: we still doubt whether there are bodies while we already perceive that we think.
Mind (n.) has no halves: you can conceive half of any body, however small, but never half a mind.
Mind (n.) stays itself through every change of thought, will and perception, while the body ceases to be the same body when one part changes shape.
Mind (n.) is apt to wander and must be given its liberty first, so that it can be gently withdrawn and more easily controlled.
Mind (n.) is the thing most easily and clearly apprehended of all — bodies themselves are known not by being seen or touched, but by being understood.
Mind (n.) is that by which I am what I am, entirely distinct from my body, and may exist without it.