Date: 1615

"The eyes are the discouerers of the mind, as the countenance is the Image of the same; by the eyes as by a window, you may looke euen into the secret corners of the Soule: so that it was well sayde of Alexander ... that the eyes are the mirror or Looking-glasse of the Soule."

— Crooke, Helkiah (1576-1648)

Date: 1620

"[A]s an uneven mirror distorts the rays of objects according to its own figure and section, so the mind, when it receives impressions of objects through the sense, cannot be trusted to report them truly"

— Bacon, Sir Francis, Lord Verulam (1561-1626)

Date: 1620

"And the human understanding is like a false mirror, which, receiving rays irregularly, distorts and discolours the nature of things by mingling its own nature with it."

— Bacon, Sir Francis, Lord Verulam (1561-1626)

Date: 1621

One may have "A soule tra-lucent in an open brest"

— Sylvester, Joshua (1562/3-;1618)

Date: 1641

A geometrical argument fills the mind and allows one to see everything at a single glance

— Mersenne, Marin (1588-1648)

Date: 1641

A calm mind, free from the hurly-burly of external things, may fix its gaze on itself

— Arnauld, Antoine (1612-1694)

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: 1651

"Attraction is a ministering faculty, which, as a loadstone doth iron, draws meat into the stomach, or as a lamp doth oil; and this attractive power is very necessary in plants, which suck up moisture by the root, as, another mouth, into the sap, as a like stomach."

— Burton, Robert (1577-1640)

Date: 1656

"Some things do through our Judgement pass / As through a Multiplying Glass."

— Cowley, Abraham (1618-1667)

Date: 1658

"May not our eyes bee very well defin'd / The Looking-glass of Nature, and the minde."

— Billingsley, Nicholas (bap. 1633, d. 1709)