As most indicators continue to show the gap between the rich and the rest getting bigger, renowned author and economist Thomas Piketty’s latest book strikes an optimistic note.

In A Brief History of Equality, Piketty argues that the world is broadly on the right track to reducing socioeconomic inequality.

“There’s a long run of social demand for equality that is inseparable from modernity,” he says.

“The key to transformation is collective mobilisations through new forms of political parties, political movements.”