  Trailing the modern ideas of sociophysics, a minimalistic thermodynamic model
of society is proposed, which consists of three social ingredients: people,
economy, and entropy. Employing the universal van der Waals equation of state,
many important relationships are discovered, including laws of econophysics. A
paramount finding is that the Second Law of thermodynamics governs irreversible
social evolution, revealing the power of social liberty and economic freedom.
