"Tho' an impression is made upon the mind, by means of the image painted upon the retina, whereby the external object is perceived; yet nature has carefully concealed this impression from us, in order to remove all ambiguity, and to give us a distinct feeling of the object itself, and of that only."
— Home, Henry, Lord Kames (1696-1782)
Lord Kames, Essays on the Principles of Morality and Natural Religion: in Two Parts. (Edinburgh: Printed by R. Fleming, for A. Kincaid and A. Donaldson, 1751). <Link to ECCO-TCP>