Carlo Rovelli
If I became ruler of the world, I would step down and go back to my life as a theoretical physicist because ruling the world is bound to be a stressful job: everyone is going to criticise everything you do. And yet, if I really had no choice but to rule, here are my realistic and reasonable commands:
• Borders and armies are abolished. Humans are instinctively generous, collaborative and caring. We lived for hundreds of thousands of years keeping the hierarchical chimpanzee instincts at bay. We shall try again, with the technology and knowledge that are meant to make life far easier for us all.