This simple word "yes" contains all the religions of the world. It contains trust, it contains love, it contains surrender. It contains all the prayers that have ever been done, are being done, and will ever be done. If you can say yes with the totality of your heart, you have said all that can be said. To say yes to existence is to be religious, to say no is to be irreligious.
That's my definition of the atheist and the theist. The atheist is not one who denies God, and the theist is not one who believes in God -- not necessarily so, because we have seen great theists who never believed in any God. We have known Buddha, Mahavira, Adinatha: we have known tremendously enlightened people who never talked about God.
But they also talked about yes; they had to talk about yes.