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.
Louis L'AmourWhen corruption is visited upon the cities of men, the mountains and the deserts await him. The cities are for money but the high-up hills are purely for the soul.
Louis L'Amour