Date: 1664

"They are moved (if I may dare to say so) like the rational creatures of the Almighty Poet, who walk at liberty, in their own opinion, because their fetters are invisible; when, indeed, the prison of their will is the more sure for being large; and instead of an absolute power over their actions,...

— Dryden, John (1631-1700)

Date: 1670

"Thus, like a captive in an isle confined, / Man walks at large, a prisoner of the mind."

— Dryden, John (1631-1700)

Date: 1678

"And yet the soul, shut up in her dark room, / Viewing so clear abroad, at home sees nothing"

— Dryden, John (1631-1700)

Date: 1691

"Men have no Windows in their Breast"

— Wilson, John (bap. 1626, d. 1695?)