When you see from a hilltop how beautiful are the twinkling lights of a city, you forget that it is the dynamo that is providing the electricity to illumine the bulbs. So when you see the sparkling vitality of human beings, but you do not know what is enlivening them, then you are spiritually blind. That Power, even though unseen, is very evident. It is all the time playing hide-and-seek behind our thoughts. - Paramahansa Yogananda.