We can see this tendency in the rising of the waves, always trying to reach high and higher still. When they cannot go any farther they fall, but again they rise. The tendency of the animals to stand on their hind legs is also the tendency of rising; fishes enjoy that swing of going up with the waves in the sea; the greatest joy of the bird is to be up in the sky. And man, whose soul is striving to rise, shows in his upright form that among all living beings he is the one who stands upright. All through creation this tendency shows itself; that is why the mystic uses this tendency to work towards the real purpose of life.