We know joy when we are happy to take from life what is given. When we experience the joy of the soul and higher states of consciousness, this joy is the essence of completion and fulfillment. There is nothing that can add to it or take away from it. Joy is our natural state.
The world is full of implicit religion, and the inspired saints and poets, who say that the birds "praise God" when they sing, are in no way mistaken. Because it is their tiny life itself which sings the "great life" and makes heard, through its countless variations, the same news which is as old as the world and as new as the day: "Life lives and vibrates in me." What homage to the source of life is expressed by these small streams of life: the birds which sing!"