Prout cogitationes rerumque ideæ ordinantur et concatenantur in mente, ita corporis affectiones seu rerum imagines ad amussim ordinantur et concatenantur in corpore.
English (Elwes 1883)
Even as thoughts and the ideas of things are arranged and associated in the mind, so are the modifications of body or the images of things precisely in the same way arranged and associated in the body.
Modern English
Just as thoughts and ideas of things are ordered and connected in the mind, so the affections of the body, or images of things, are ordered and connected in the body in precisely the same way.