Ralph Cudworth Quote

If intellection and knowledge were mere passion from without, or the bare reception of extraneous and adventitious forms, then no reason could be given at all why a mirror or looking-glass should not understand; whereas it cannot so much as sensibly perceive those images which it receives and reflects to us.

Ch. 1, sct. 3 - Treatise Concerning Eternal and Immutable Morality (1731)