A la recherche du temps perdu

"All light has passed over into the thin flame of the eye, which now flickers around solid objects and, in so doing, establishes their place and form. Rational discourse is based less on the geometry of light than on the insistent, impenetrable density of the object, for prior to all knowledge, the source, the domain, and the boundaries of experience can be found in its dark presence."
—  Michel Foucault, The Birth of the Clinic, trans. A. M. Sheridan Smith