To be Shakespeare or...

I like to write, but I feel as though my writing should be memorable artwork. So I try to write like Shakespeare; I use poetry and prose as much like sword as possible. I get philosophical, theological and sometimes ideological -- though I normally avoid the ladder. However, should I strive to write like Shakespeare or just strive to write ? I struggle with that often. Authors of today, do not write like the poets of yesterday, at least they normally do not.
And I keep thinking to myself, what if I write the next great science fiction novel? Is it possible? Do I have that talent? I sure hope so. I would like for my works be looked at as science-fiction Moby Dick stories. Herman Melville wrote the Great American novel. Moby Dick has come down generation after generation as being one of the most beautiful works of American literature. I can always remember lines from it as being so rich in depth and poetry. My favorite line: "He piled upon the whale’s white hump the sum of all the general rage and hate felt by his whole race from Adam down; and then, as if his chest had been a mortar, he burst his hot heart’s shell upon it." If anyone could write science fiction like that, to be the Masters of the past: HG Wells, Jules Vern, etc., they would be remembered. Especially that today's science fiction is so related to science and mixed with fantasy. Certainly, authors in the past have looked to the future, but nowadays so much technical information is required in the book to call it science fiction. Does that make it less poetic? Maybe. Maybe not.