The second hand in the watch moves fast round and round; when it completes one full round, the minute hand moves just a little. It's movement is not so perceptible. When the minute hand has completed one round in its own slow manner, you find that the hour hand has moved towards the next number. The second hand is the symbol of Karma or action; through action done by the gross body, the various good works it engages itself in, the subtle body or inner consciousness progresses a little and moves forward. The result of increasing purity of the Chitta or inner consciousness is the causal body which is led towards realization. It is enough if the second hand moves; the rest follows, in proper order.
(From : Sai Veda, The Word of God, sayings of Bhagavan Sri Sathya Sai Baba)