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: 1854

"What was the meaning of that South-Sea Exploring Expedition, with all its parade and expense, but an indirect recognition of the fact, that there are continents and seas in the moral world to which every man is an isthmus or an inlet, yet unexplored by him, but that it is easier to sail many tho...

— Henry David Thoreau (1817-1862)