Here is what Richard Howard had to say about Susan Sontag:
"And ever since THE BENEFACTOR, even her means of fictive characterization has been THIS means, epigram or aphorism; concision is her antidote to what Hegel calls THE PROSE OF THE WORLD, her saving grace in a medium that is damned for its mendacity."
Hence Sontag's preference for Barthes, Canetti, Ciora, Pavese, Artaud, and even John Cage...