Date: 1611

"As in water face answereth to face, so the heart of man to man."

— Author Unknown

Date: 1641

"Now if we are to become aware of something, it is necessary for the thing to act on the cognitive faculty by transmitting its semblance to the faculty or by informing the faculty with its semblance. Hence it seems clear that the faculty itself, not being outside itself, cannot transmit a semblan...

— Gassendi, Pierre (1592-1655)

Date: w. 1628, published in 1684, 1701

"We can best learn how mental intuition is to be employed by comparing it with ordinary vision."

— Descartes, René (1596-1650)

Date: 1692

"[T]he Explanation whereof is allowed by all men as satisfactory, 'tis this, in Tab. 41. Fig. 2. the Image a b of the Object A B is painted on the Retina inverted, and yet the Eye (or rather the Soul by means of the Eye) sees the Object erect and in its natural Posture."

— Molyneux, William (1656-1698)