Wodehouse was graphomaniacal, churning out stories, novels, and librettos at a dizzying rate. He did boast a bit about that in his letters, but he was rightly proud of his output: 40,000 words of a novel in two weeks; an 8,000-word golf story in two days. In a letter to the satirical novelist Tom Sharpe, he reveals that he wrote the last 26 pages of Thank You, Jeeves in one day. It wasn’t the money, although like, well, 99.99 percent of writers, he did care about the dough. But it was simply that he had—always—to be writing.
Source: Daily Beast.