Having once studied these principles you are eternally to practise them. You are to warm yourselves at these fires, and to have recourse to them every day. When you think not of these things you are in the dark. And if you would walk in the light of them, you must frequently meditate. These principles are like seed in the ground, they must continually be visited with heavenly influences, or else your life will be a barren field. Perhaps they might be cast into better frame, and more curiously expressed; but if well cultivated they will be as fruitful, as if every husk were a golden rind. It is the substance that is in them that is productive of joy and good to all.