Paris School of Economics in the context of École des ponts ParisTech

The School for Advanced Studies in the Social Sciences (French: École des hautes études en sciences sociales, EHESS) is a graduate grande école and grand établissement in Paris focused on academic research in the social sciences. The school awards Master and PhD degrees alone and conjointly with the grandes écoles École normale supérieure, École polytechnique, and École pratique des hautes études.

Originally a department (Section VI) of the École pratique des hautes études, created in 1868 with the purpose of training academic researchers, the EHESS became an independent institution in 1975. Today its research covers social sciences, humanities, and applied mathematics. Degrees and research in economics and finance are awarded through the Paris School of Economics.

Thomas Piketty (French: [tɔmɑ pikɛti]; born 7 May 1971) is a French economist who is a professor of economics at the School for Advanced Studies in the Social Sciences, associate chair at the Paris School of Economics (PSE) and Centennial Professor of Economics in the International Inequalities Institute at the London School of Economics (LSE).

Piketty's work focuses on public economics, in particular income and wealth inequality. He is the author of the best-selling book Capital in the Twenty-First Century (2013), which emphasises the themes of his work on wealth concentrations and distribution over the past 250 years. The book argues that the rate of capital return in developed countries is persistently greater than the rate of economic growth, and that this will cause wealth inequality to increase in the future. Piketty proposes improving the education systems and considers diffusion of knowledge, diffusion of skills, diffusion of idea of productivity as the main mechanism that will lead to lower inequality. In 2019, his book Capital and Ideology was published, which focuses on income inequality in various societies in history. His 2022 A Brief History of Equality is a much shorter book about wealth redistribution intended for a target audience of citizens instead of economists.