Anybody can write, but not everybody invents new forms of writing. Gertrude Stein invented a new form of writing and her imitators are just 'talents.' Hemingway later invented his own form also. The criterion for judging talent or genius is ephemeral, speaking rationally in this world of graphs, but one gets the feeling definitely when a writer of genius amazes him by strokes of force never seen before and yet hauntingly familiar.

The portable Jack Kerouac (ed. Penguin Group USA, 1995)