Emerson explores the concept of Microcosm

From “Compensation”

These appearances indicate the fact that the universe is represented in every one of its particles. Every thing in nature contains all the powers of nature. Every thing is made of one hidden stuff; as the naturalist sees one type under every metamorphosis, and regards a horse as a running man, a fish as a swimming man, a bird as a flying man, a tree as a rooted man. Each new form repeats not only the main character of the type, but part for part all the details, all the aims, furtherances, hindrances, energies and whole system of every other. Every occupation, trade, art, transaction, is a compend of the world and a correlative of every other. Each one is an entire emblem of human life; of its good and ill, its trials, its enemies, its course and its end. And each one must somehow accommodate the whole man and recite all his destiny.

The world globes itself in a drop of dew. The microscope cannot find the animalcule which is less perfect for being little. Eyes, ears, taste, smell, motion, resistance, appetite, and organs of reproduction that take hold on eternity,--all find room to consist in the small creature. So do we put our life into every act. The true doctrine of omnipresence is that God reappears with all his parts in every moss and cobweb. The value of the universe contrives to throw itself into every point. If the good is there, so is the evil; if the affinity, so the repulsion; if the force, so the limitation.

Thus is the universe alive. All things are moral. That soul which within us is a sentiment, outside of us is a law. We feel its inspiration; out there in history we can see its fatal strength. "It is in the world, and the world was made by it." Justice is not postponed. A perfect equity adjusts its balance in all parts of life. Hoi kuboi Dios aei eupiptousi,--The dice of God are always loaded. The world looks like a multiplication-table, or a mathematical equation, which, turn it how you will, balances itself. Take what figure you will, its exact value, nor more nor less, still returns to you. Every secret is told, every crime is punished, every virtue rewarded, every wrong redressed, in silence and certainty. What we call retribution is the universal necessity by which the whole appears wherever a part appears. If you see smoke, there must be fire. If you see a hand or a limb, you know that the trunk to which it belongs is there behind.