Note 752 — Chapter V · (continued 2)

‘Why sensation should compel our belief of the present existence of the thing, memory a belief of its past existence, and imagination no belief at all, I believe no philosopher can give a shadow of reason, but that such is the nature of these operations. They are all simple and original, and therefore inexplicable acts of the mind.’ Reid's Inquiry, p. 40. ‘We can give no reason why the retina is, of all parts of the body, the only one on which pictures made by the rays of light cause vision; and therefore we must resolve this solely into a law of our constitution’ p. 258.