In Capital in the 21st Century, Thomas Piketty offered a new perspective on a problem that has received increasing attention in recent decades. - the problem of inequality. After analyzing a huge amount of data, the French economist discovered the following pattern. All other things being equal, rapid economic growth reduces the role of capital and its concentration in private hands and leads to a reduction in inequality, while slower growth results in an increased importance of capital and increased inequality. In historical retrospect - and Piketty's book covers a huge period from the beginning of the 18th century to the present day - the growth of the influence of capital was interrupted only in the twentieth century as a consequence of two world wars and the Keynesian policies of the Glorious Thirty Years (1945-1975). Today, the world is returning to a situation where Inequality is steadily increasing, which can lead to dire social and political consequences. However, unlike Karl Marx, with whom Piketty is often compared, the Frenchman does not limit himself to a gloomy statement of the current situation and does not predict the collapse of the capitalist system. He proposes measures that could stop the unfavorable trends. Thomas Piketty (French) - “Le Capital au XXIe siècle” (French), “Capital in the Twenty-First Century” (English)