Steven David Levitt is an American economist and co-author of the best-selling book Freakonomics and its sequels (along with Stephen J. Dubner). Levitt was the winner of the 2003 John Bates Clark Med…
Philippa Perry, author of How to Stay Sane, is a psychotherapist and writer who has written pieces for The Guardian, The Observer, Time Out, and Healthy Living magazine and has a column in Psychologie…
