Book excerpt: Learn everything you need to know about Albert Einstein, the genius who created the Theory of Relativity and calculated mass-energy equivalence. 101 Things You Didn’t Know About Einstein provides in-depth, fascinating facts about the famous scientist and mathematician—including details about his personal life, scientific discoveries, interactions with his contemporaries, thoughts on war, religion, and politics, and his impact on the world since his death. Whether you’re seeking inspiration, information, or interesting and entertaining trivia, this book contains everything you need to know about Albert Einstein!