After I finished reading Sapiens I immediately purchased the follow-up book, Homo Deus. In Homo Deus, Harari takes a macro view on the future of humanity and distills it down to the important challenges we face as global species. His writing style is clear, concise, and very well thought out.
Hands down one of the best books I've read to date. Harari explores the ways in which biology and history have defined us and enhanced our understanding of what it means to be “human”. Not only does this book look to the past for answers, it gives insight on where humanity may be headed in the future.