http://www.brainpickings.org/2014/10/17/are-writers-born-or-made-jack-kerouac/

…a genius is simply a person who originates something never known before. Nobody but Melville could have written Moby-Dick, not even Whitman or Shakespeare. Nobody but Whitman could have written Leaves of Grass; Whitman was born to write Leaves of Grass and Melville was born to write Moby-Dick.

~ Jack Kerouac