We can best understand a universe in man first by comparing a drop of water with the sea. The water has the same tendency of responding to the air, whether it be in the ocean, the sea, in a river, or in a glass of water. Even in the glass of water it responds to the air, and if there were room there would be waves. In the river there are waves, in the sea there are bigger waves, in the ocean they rise much higher still. The same tonic, properties, that doctors find in the water of the sea we can find in the drop of water. The microbes, the germs that exist in the ocean, live also in a drop of water.