article_snippet: Tim Walker added: 'A generation or so ago, Bertrand Russell was considered to be a great thinker.
article_snippet: Thomas Piketty, French economist.
article_snippet: Yanis Varoufakis, Greek finance minister.
article_snippet: Naomi Klein, US author.
article_snippet: Paul Krugman, US economist.
article_snippet: Arundhati Roy, Indian writer and activist.
article_snippet: Jurgen Habermas, German philosopher.
article_snippet: Daniel Kahneman, US-Israeli psychologist.
article_snippet: John Gray, UK philosopher.
article_snippet: Atul Gawande, US surgeon and writer.
article_snippet: This year's winner was French economist Thomas Piketty, whose Capital in the Twenty-First Century book explored the thesis is that capitalist economies have a natural tendency to incubate highly unequal distributions of income and wealth.
article_snippet: The surprise best-seller, was described as having an 'extraordinary' impact outside the world of professional economists.
article_snippet: Greek finance minister Yanis Varoufakis was rated second greatest thinker and US author Naomi Klein came third.
article_snippet: Paul Krugman, US economist were also in the top ten.
article_snippet: Rated as ninth was British philosopher John Gray, the former Professor of European Thought at the London School of Economics, who was described as 'the West's pre-eminent oracle of catastrophe'.
highlights_snippet: Others in the top ten are economists, philosophers and a US surgeon .
  