In all the concentric spheres strung on the radius measured by these extremes, there is the same co-acting of internal and external forces.

And mind, of man or angel, guides and governs both.

Not a flower that ever breathed on earth, not one that ever blushed in Eden, could open all its hidden treasures of beauty without the co-working of man's mind and taste.

No animal that ever bowed its neck to his yoke, or gave him labor, milk or wool, could come to the full development of its latent vitalities and symmetries without the help of his thought and skill.

The same law obtains in his own physical nature.