Alongside Shakespeare's plays and Beethoven's symphonics, calculus of one of the greatest achievement of the human mind. Yet, few of us understand the powerful simplicity underneath it. The course carefully shows how calculus explains motion-and that this insight is composed of only, two simple ideas. Professor Starbird explains how calculus shows how everything that changes over time can be understood with its insights, uniting the way we see economics, astronomy, engineering, and even baseball, because it is an insight into the nature of reality itself.