The Apprentice Years

If imitation plays a central role in the performing arts, where incessant practice, repetition, and rehearsal are essential, it is equally important in painting or composing or writing, for example. All young artists seek models in their apprentice years, models whose style, technical mastery, and innovations can teach them. Young painters may haunt the galleries of the Met or the Louvre; young composers may go to concerts or study scores. All art, in this sense, starts out as “derivative,” highly influenced by, if not a direct imitation or paraphrase of, the admired and emulated models.

—Oliver Sacks, from "The Creative Self" 

William Maxwell would agree. And so would William Zinsser.