The only power source a book needs is you. If you have to leave for a few minutes you have not lost the story. It is waiting for you when you return. You can pick up a book and resume reading at any time, after a few minutes, a few days, even a few years. A television picture or a movie might be lost forever, but your book is waiting.
It is often said that one has but one life to live, but that is nonsense. For one who reads, there is no limit to the number of lives that may be lived, for fiction, biography and history offer an inexhaustible number of lives in all periods of time.
One day I was speeding along at the typwriter, and my daughter - who was a child at the time - asked me, "Daddy, why are you writing so fast?" And I replied, "Because I want to see how the story turns out!"