The point, which can hardly be repeated too often, is that differentiation is not separation. The head and the feet are different, but not separate, and though man is not connected to the universe by exactly the same physical relation as branch to tree or feet to head, he is nonetheless connected - and by physical relations of fascinating complexity.
Do not be too timid and squeamish about your actions. All life is an experiment. The more experiments you make the better. What if they are a little coarse and you may get your coat soiled or torn? What if you do fail, and get fairly rolled in the dirt once or twice? Up again, you shall never be so afraid of a tumble.
The further the spiritual evolution of mankind advances, the more certain it seems to me that the path to genuine religiosity does not lie through the fear of life, and the fear of death, and blind faith, but through striving after rational knowledge.
How is it possible that a being with such sensitive jewels as the eyes, such enchanted musical instruments as the ears, and such a fabulous arabesque of nerves as the brain can experience itself as anything less than a god? And, when you consider that this incalculably subtle organism is inseparable from the still more marvelous patterns of its environment - from the minutest electrical designs to the whole company of the galaxies - how is it conceivable that this incarnation of all eternity can be bored with being?