About Capital in the Twenty-First Century
介绍了《二十一世纪资本论》中关于收入和财富长期不平等的三个关键事实，澄清了r>g在财富不平等分析中的作用，并讨论了最优税收及资本收入比与资本份额的关系。
In this article, I present three key facts about income and wealth inequality in the long run emerging from my book Capital in the Twenty-First Century and seek to sharpen and refocus the discussion about those trends. In particular, I clarify the role played by r > g in my analysis of wealth inequality. I also discuss some of the implications for optimal taxation, and the relation between capital-income ratios and capital shares.