This past week I’ve been traveling with a group of friends through the Greek Islands. While my friends enjoyed swimming and shopping I entered into a new and fascinating realm by immersing myself in a new book Sapiens: A Brief History of Humankind by Yuval Noah Harari.

“What ’cha been reading?” One friend asked me before lunch, while putting down a number of shopping bags.

“The best book I’ve ever read in my life.”

“Oh, come on, Alan. Whatever it is, it can’t be the best book you’ve ever read...