" Good writers may “tell” about almost anything in fiction except the characters’ feelings. One may tell the reader that the character went to a private school (one need not show a scene at the private school if the scene has no importance for the rest of the narrative), or one may tell the reader that the character hates spaghetti; but with rare exceptions the characters’ feelings must be demonstrated: fear, love, excitement, doubt, embarrassment, despair become real only when they take the form of events—action (or gesture), dialogue, or physical reaction to setting. Detail is the lifeblood of fiction. "

― John Gardner , On Becoming a Novelist