I am sometimes asked whether it is necessary for a yoga practitioner to believe in God. My reply is very simple: ‘If you not believe in God, do you believe in your own existence?’ Since you believe in your own existence, that means you want to improve yourself for the betterment of your life. . . So there is no need for you to believe in God, but you have to believe in yourself
_{B.K.S. Iyengar}