The Joy of x
Steven Strogatz, The Joy of x: A Guided Tour of Math, from One to Infinity (Mariner Books, 2013)
Summary: The title speaks for itself. Concise and fluid chapters on thirty mathematical subjects. A blend of history, commentary, discovery, application, theory, and fun.
Key Quote: "Logic leaves us no choice. In that sense, math always involves both invention and discovery: we invent the concepts but discover their consequences…[In] mathematics our freedom lies in the questions we ask—and in how we pursue them—but not in the answers awaiting us." - p. 5
Bottom Line: Read this book if you like any everyday aspect of math.