An essay argues that a universal law of balance governs nature and human affairs, returning consequences for excess and defect. It catalogs instances of polarity—dark and light, heat and cold, biological trade-offs and mechanical losses—to show that gains carry offsetting losses. Applied to morals and society, the principle accounts for why wealth, power, talent, or pleasure bring countervailing penalties or duties and why apparent injustices tend to be equalized over time. The author rejects doctrines that defer justice beyond life, insisting moral equilibrium operates now through character and will. The overall message urges moderation and warns that nature resists monopolies by imposing costs on every advantage.