Capital in the Twenty-First Century
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Capital in the Twenty-First Century

Thomas Piketty

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Thomas Piketty’s *Capital in the Twenty-First Century* upends mainstream views on inequality by analyzing 300 years of global economic data, from 19th-century European aristocracies to 21st-century U.S. super-executives. At its core is the pivotal formula: when the rate of return on capital (r) outpaces overall economic growth (g), inherited wealth accumulates faster than earned income, widening the gap between the haves and have-nots. Piketty contrasts Europe’s legacy of inherited wealth concentration with America’s surge in sky-high executive pay, showing both systems fuel systemic inequality. He debunks myths about "natural" market balance, arguing unregulated capitalism will revert to a "patrimonial" system where birth determines fortune. The book’s bold prescription? A global progressive capital tax to rein in extreme wealth, boost financial transparency, and reframe capitalism to serve the many, not just the few—offering a roadmap for a more equitable future.

Wealth InequalityInherited wealthCapital-income ratioPublic debtCapital Return Rate
Concept

r>g Core Inequality Rule

When net capital return (r) stays permanently higher than economic growth rate (g), inherited wealth grows faster than wages, leading to continuously widening wealth gaps.

InequalityInheritanceCapital Return
Insight

Inherited Wealth Is Rebounding

After dropping to less than 5% of national income post-WWII, annual wealth transferred via inheritance rebounded to 15% of national income in France by 2010, and will keep rising.

Social StructureInheritanceWealth Trend
Golden Sentence

Past Devours The Future

When capital return outpaces economic growth, wealth accumulated by past generations grows faster than new wealth created by work, making old inherited wealth far more powerful.

InequalityCapitalQuotes
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