Motion is the significance of life, and the law of motion is rhythm. Rhythm is life disguised in motion, and in every guise it seems to attract the attention of man: from a child, who is pleased with the moving of a rattle and is soothed by the swing of its cradle, to a grown person whose every game, sport and enjoyment has rhythm disguised in it in some way or another, whether it is a game of tennis, cricket or golf, as well as boxing and wrestling. Again in the intellectual recreations of man, both poetry and music - vocal or instrumental - have rhythm as their very spirit and life. There is a saying in Sanskrit that tone is the mother of nature, but that rhythm is its father.