- 'The economy has to keep growing.' So says top economist Peter De Keyzer. In his view, a free market and intelligent growth are necessary for our continued wealth and well-being. Better yet: economic growth is the only recipe for guaranteeing more freedom and more prosperity for all. Nevertheless, after nearly five years of crisis, one no longer seems to believe in economic progress. Growth Makes You Happy is a solidly argued plea in favour of more optimism, more risk, less collectivism, and more freedom.