Date: 1665

"Youth is one long intoxication; it is reason in a fever."

— La Rochefoucauld, François, duc de (1613-1680)

Date: 1667, 1710

"The Mind of Man is his Eye, by which he is to behold God; now if this Eye be blind, if the Light be Darkness, how great is that Darkness!"

— Janeway, James (1636?-1674)

Date: 1672, 1701

"The Contemplation of the Object represents the matter to the mind, in the same manner as its outward appearance doth to the Eye."

— Salmon, William (1644-1713)

Date: 1673

" For tho the adulterations of art, can represent in the same Face beauty in one position, and deformity in another, yet nature is more sincere, and never meant a serene and clear forhead, should be the frontispiece to a cloudy tempestuous heart."

— Allestree, Richard (1611/2-1681)

Date: 1682

"They compare a Wicked Man's Mind to a Vitiated Stomach; he corrupts whatever he receives, and the best Nourishment turns to the Disease. But, taking this for granted, a Wicked Man may yet be so far Oblig'd, as to pass for Ungrateful, if he does not Requite what be Receives."

— L'Estrange, Sir Roger (1616-1704)

Date: 1682

"Our Passions are nothing else but certain Disallowable Motions of the Mind; Sudden, and Eager; which, by Frequency, and Neglect, turn to a Disease; as a Distillation brings us first to a Cough, and then to a Phthisick."

— L'Estrange, Sir Roger (1616-1704)

Date: w. 1628, published in 1684, 1701

"The writers displayed many geometrical truths before my very eyes, as it were, and derived them by means of logical arguments"

— Descartes, René (1596-1650)

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: w. 1628, published in 1684, 1701

"Moreover, as we said, we should not contemplate, in one and the same visual or mental gaze, more than two of the innumerable different dimensions which it is possible to depict in the imagination."

— Descartes, René (1596-1650)

Date: 1686, 1689, 1697

"Having spoken in the foregoing Chapter of the Improvements of the Mind by Erudition, it follows of Course that we speak of the Improvement of the Body by Exercise. Indeed a Vigorous and Athletick Habit of Body, doth extreamly advance the like Disposition and Ability in the Mind; Since all Intell...

— Nourse, Timothy (c.1636–1699)