It is easy to forget how little time he had.
Between his expulsion from Oxford University (for atheism) in March 1811, and his drowning in the gulf of Spezia (too much sail) in July 1822, Percy Bysshe Shelley did not have much more than eleven yeras to live and write.
But during that brief, reckless, exuberant lifetime he published ten books of poetry;travelled throughout Europe; was the subject of a Home Office security dossier; eloped twice and married twice; fathered six children; edited Mary Shelley’s Frankenstein; befriended Lord Byron; learned to sail but not to swim; and left such a large body of poems, political pamphlets, philosophical essays and classical translations that they were still being published over a century after his death.
-Percy Bysshe Shelley Collected Poems, Folio Society