Date: 1690, 1694, 1695, 1700, 1706

Surveying the "Powers of our own Minds" is like fathoming "the depths of the Ocean": "'Tis of great use to the Sailor to know the length of his Line, though he cannot with it fathom all the depths of the Ocean. 'Tis well he knows, that it is long enough to reach the bottom, at such Places as are ...

— Locke, John (1632-1704)

Date: 1691

"Thirdly, Let us hence duly learn to prize and value our Souls; is the Body such a rare Piece, what this is the Soul? the Body is but the Husk or Shell, the Soul is the Kernel; the Body is but the Cask, the Soul the precious Liquor contained in it; the Body is but the Cabinet; the Soul the Jewel;...

— Ray [formerly Wray], John (1627–1705)

Date: 1697

"As a Ship at Sea running swiftly thro the Waves, leaves behind a Track, which is almost as soon lost as made, so that no sign can be found of its Passage thro that fluid Element: So the moisture of the Brain may be susceptible of an Idea for the present, but 'tis not lasting, nor is there any si...

— D'Assigny, Marius (1643-1717)

Date: 1708, 1714

"For besides that our Reason, which knows the Cheat, will never rest thorowly satisfy'd on such a Bottom, but turn us often a-drift, and toss us in a Sea of Doubt and Perplexity."

— Cooper, Anthony Ashley, third earl of Shaftesbury (1671-1713)

Date: Wednesday, June 18, 1712

"The strange and absurd Variety that is so apparent in Men's Actions, shews plainly they can never proceed immediately from Reason; so pure a Fountain emits no such troubled Waters: They must necessarily arise from the Passions, which are to the Mind as the Winds to a Ship, they only can move it,...

— Anonymous