Spinoza's Cubism

Eadweard Muybridge, Nude Descending Stairs

I say expressly that the mind does not have an adequate knowledge, of itself, its own body, and external bodies whenever it perceives things from the common order of nature, that is, whenever it is determined externally - namely by the fortuitous run of circumstance - to regard this or that, and not when it is determined internally, through its regarding several things at the same time, to understand their agreement, differences, and their opposition. For whenever it is conditioned internally in this or another way, then it sees things clearly and distinctly, as I shall later show. (Ethica II, scholium to prop. 29)

Marcel Duchamp, Nude Descending a Staircase, No. 2