11. Nature is never opposed to itself. The coat-of-arms of the universe has for its only device: unity - variety. In climbing the ladder of the worlds, one finds unity in harmony in all creation. At the same time there is an infinite variety in this immense garden of stars. In passing through the degrees of life from the lowest being even to God, the great law of continuity is recognizable. In considering the forces in themselves, one can find a series whose result, mingling with the generatrix, is the universal law.
You cannot appreciate this law to the full extent, since the forces which represent it in your field of observation are restrained and limited. However, gravitation and electricity can be regarded as a large application of the primordial law which reigns beyond the heavens.
All these forces are eternal, — we will explain this word, — universal as the creation. Being inherent in the cosmic fluid, they necessarily act in all things everywhere, modifying their action by their simultaneous working or their succession, predominating here, effacing themselves farther on; powerful and active at certain points, latent or secret at others, but finally preparing, directing, preserving and destroying worlds in their diverse periods of life, governing marvelous works of nature, wherever they are exerted, assuring to creation eternal splendor.