How Geniuses Think

How do geniuses come up with ideas? What is common to the thinking style that produced “Mona Lisa” as well as the one that spawned the theory of relativity? What characterizes the thinking strategies of the Einsteins, Edisons, da Vincis, Darwins, Picassos, Michelangelos, Galileos, Freuds, and Mozarts of history? What can we learn from them?