Gatsby believed in the green light, the orgastic future that year by year recedes before us. It eluded us then, but that's no matter-tomorrow we will run faster, stretch out our arms farther. . . . And then one fine morning-
So we beat on, boats against the current, borne back ceaselessly into the past.
This a quotation from The Great Gatsby i want you to explain it and explain how it is relevant to that novel.