Not only do I spent a lot of time reading books, but I spend a lot of time reading about books. I recently ran across Flavorwire's article 'The 30 Harshest Author-on-Author Insults In History ' and I have to admit that I laughed out loud. Collected here are real quotes from authors about authors - disparaging in a cruel but also often funny way.
My favorite? Truman Capote on Jack Kerouac - “That’s not writing, that’s typing.” Ha!
Curious about the lives of authors or interested in more author zingers? Check out these interesting books about authors:
Fighting Words : Writers Lambast other Writers--from Aristotle to Anne Rice  edited by James Charlton
Once again to Zelda: the Stories Behind Literature's Most Intriguing Dedications  by Marlene Wagman-Geller
Remarkable Reads: 34 Writers and Their Adventures in Reading  by J. Peder Zane
Artistic License: Three centuries of Good Writing and Bad Behavior  by Brooke Allen
How I Write: the Secret Lives of Authors  edited by Dan Crowe with Philip Oltermann