“Life exists immersed in a sea of unconsciousness", he reminded himself.
"In the drug, these people gain a view of that sea.”

Quote from Courbet's letter to Victor Hugo, 1864; as cited by Sarah Faunce and Linda Nochlin, in Courbet Reconsidered; exhibition catalogue, The Brooklyn Museum, 1988, p. 188
1860s

Source: New Spring

Source: The Sea Around Us

First lines.
Source: Dalemark Quartet, Drowned Ammet (1977), p. 223.

La mer est tout! Elle couvre les sept dixièmes du globe terrestre. Son souffle est pur et sain. C'est l'immense désert où l'homme n'est jamais seul, car il sent frémir la vie à ses côtés. La mer n'est que le véhicule d'une surnaturelle et prodigieuse existence; elle n'est que mouvement et amour.
Part I, ch. X: The Man of the Seas
Twenty Thousand Leagues Under the Sea (1870)

Reported in Josiah Hotchkiss Gilbert, Dictionary of Burning Words of Brilliant Writers (1895), p. 108.
Context: There are two ways of defending a castle; one by shutting yourself up in it, and guarding every loop-hole; the other by making it an open centre of operations from which all the surrounding country may be subdued. Is not the last the truest safety? Jesus was never guarding Himself, but always invading the lives of others with His holiness. There never was such an open life as His; and yet the force with which His character and love flowed out upon the world kept back, more strongly than any granite wall of prudent caution could have done, the world from pressing in on Him. His life was like an open stream which keeps the sea from flowing up into it by the eager force with which it flows down into the sea. He was so anxious that the world should be saved that therein was His salvation from the world. He labored so to make the world pure that He never even had to try to be pure Himself.

An Apprenticeship, or The Book of Delights (1968)

"There are Two Seas" http://www.ciadvertising.org/student_account/spring_01/adv382j/suz/two_seas.htm, McCall's magazine (1928); reprinted in the Reader's Digest (1946)
Context: There are two seas in Palestine. One is fresh, and fish are in it. Splashes of green adorn its banks. Trees spread their branches over it and stretch out their thirsty roots to sip of its healing waters... The Sea of Galilee receives but does not keep the Jordan. For every drop that flows into it another drop flows out. The giving and receiving go on in equal measure. The other sea is shrewder, hoarding its income jealously. It will not be tempted into any generous impulse. Every drop it gets, it keeps. The Sea of Galilee gives and lives. The other sea gives nothing. It is named The Dead. There are two kinds of people in the world. There are two seas in Palestine.

Source: Ocean Sea