Date: 1789, 1800

"Human Nature's his show-box--your friend, would you know him? / Pull the string, Ruling Passion--the picture will show him."

— Burns, Robert (1759-1796)

Date: w. 1798-1800, 1814

"Of the individual Mind that keeps her own / Inviolate retirement, subject there / To Conscience only, and the law supreme / Of that Intelligence which governs all."

— Wordsworth, William (1770-1850)

Date: 1820

"Yet am I king over myself, and rule / The torturing and conflicting throngs within, / As Jove rules you when Hell grows mutinous."

— Shelley, Percy Bysshe (1792-1822)