As you walk along the road, your shadow follows you, through dirt and dust, bush and bramble, mound and midden, brook and boulder. But, note how the shadow has constant contact with the feet. So long as the shadow (man) has fast and firm contact with the feet of the substance (the Lord), no hardship can affect him. Hold on to the Lord; that is the way to peace and joy.
(From : Sai Veda, The Word of God, sayings of Bhagavan Sri Sathya Sai Baba)