As there is such comfort and joy and so great a secret of heavenly peace during sound sleep, so there is a greater joy and peace and inspiration when the mind is stilled. The mind is so like water that our poets always call it the sea, the ocean. The nature of water is that as we look into it we see a face reflected there, our own image. If the water is not still, the face is not clear; when the water is still everything reflected in it is clear. So it is with the mind. When the mind is stilled it hears what another person says, it can ponder upon anything that it sees; and when one is sufficiently developed the mind can hear even what is said from the other side; even what God says from heaven.