He had the attitude that he could do anything, and therefore so can you. He put his life in my hands. So that made me do something I didn't think I c… - Walter Isaacson

Kenneth Clark referred to Leonardo’s “inhumanly sharp eye.” It’s a nice phrase, but misleading. Leonardo was human. The acuteness of his observational skill was not some superpower he possessed. Instead, it was a product of his own effort. That’s important, because it means that we can, if we wish, not just marvel at him but try to learn from him by pushing ourselves to look at things more curiously and intensely. In his notebook, he described his method — almost like a trick — for closely observing a scene or object: look carefully and separately at each detail. He compared it to looking at the page of a book, which is meaningless when taken in as a whole and instead needs to be looked at word by word. Deep observation must be done in steps: “If you wish to have a sound knowledge of the forms of objects, begin with the details of them, and do not go on to the second step until you have the first well fixed in memory.

While some may see them as the crazy ones, we see genius. Because the people who are crazy enough to think they can change the world are the ones who do.”3

One day someone called the Institute and asked to speak to a particular dean. When his secretary said that the dean wasn’t available, the caller hesitantly asked for Einstein’s home address. That was not possible to give out, he was informed. The caller’s voice then dropped to a whisper. “Please don’t tell anybody,” he said, “but I am Dr. Einstein, I’m on my way home, and I’ve forgotten where my house is.”40