Date: 1665

"The sicknesses of the soul have their ups and downs like those of the body; what we take to be a cure is most often merely a respite or change of disease."

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

Date: 1665

"Defects in the soul are like wounds in the body: whatever care is taken to heal them the scars always show"

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

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)