Descartes asserts that all that there is that is directly cognisable to us, by mind or by eye, are modifications of two substances: res cogitans and res extensa, mental and corporeal.
How does he himself concieve of time in his scheme? Does he say?
For when I think, I can think without space - I close my eyes; but I still think in time; for I have a thought now, and then, then: so thinking on thinking, serially and consecutively; and then, in parallel; that is reflectively.
Is time then a modification of res cogitans?
Or reflecting, is res cogitans a modification of time?
Or must we say: time has res extensa?
This might be supposed given how we model time - through the concept of space - the timeline or spacetime; but in itself, as it is experienced; as I experience it, or you; it doesn't appear to have the sense of spatiality that space has:
To go left in time, or right; or to go back in time, but not to turn time back; is a sense that time lacks; but not space, it's front or back.
Or in the way a body placed in space has space because it occupies place; can time have height, or breadth or depth? Even when time has its depths...
What's Descartes actual position on this?