"My dear, we burn lamps and candles on the altar for several reasons, which it would take too long to tell you just now; when you are older, I will give you a little book called "Sacramentals," which explains all about the lights on our altars, the use of holy water, blessed palm, the crucifix, etc. For the present it suffices to tell any one who questions you that the lamp in our Oratory is kept burning as a mark of respect towards the Sacred Heart of Jesus, and besides it is a pretty ornament."