Who said “Men are not against you; they are merely for themselves.”?

“Opposition is true friendship.”

“I love opposition that has convictions.”

“One-fifth of the people are against everything all the time.”

“Opposition always enflames the enthusiast, never converts him.”

“I respect only those who resist me; but I cannot tolerate them.”

“Psychoanalysts seem to be long on information and short on application.”

“Writing is easy. All you do is stare at a blank sheet of paper until drops of blood form on your forehead.”

“Perhaps no mightier conflict of mind occurs ever again in a lifetime than that first decision to unseat one's own tooth.”

“The best way to become a successful writer is to read good writing, remember it, and then forget where you remember it from.”

“I am glad that I paid so little attention to good advice; had I abided by it I might have been saved from some of my most valuable mistakes.”