Quicker than the Eye by Ray Bradbury.

The internationally acclaimed author of The Martian Chronicles, The Illustrated Man, and Fahrenheit 451, Ray Bradbury is a magician at the height of his powers, displaying his sorcerer's skill with twenty-one remarkable stories that run the gamut from total reality to light fantastic, from high noon to long after midnight. A true master tells all, revealing the strange secret of growing young and mad; opening a Witch Door that links two intolerant centuries; joining an ancient couple in their wild assassination games; celebrating life and dreams in the unique voice that has favored him across six decades and has enchanted millions of readers the world over.