" Throughout history we read of Masters in every conceivable form of human endeavor describing a sensation of suddenly possessing heightened intellectual powers after years of immersion in their field. The great chess Master Bobby Fischer spoke of being able to think beyond the various moves of his pieces on the chessboard; after a while he could see “fields of forces” that allowed him to anticipate the entire direction of the match. For the pianist Glenn Gould, he no longer had to focus on notes or parts of the music he was playing, but instead saw the entire architecture of the piece and could express it. Albert Einstein suddenly was able to realize not just the answer to a problem, but a whole new way of looking at the universe, contained in a visual image he intuited. The inventor Thomas Edison spoke of a vision he had for illuminating an entire city with electric light, this complex system communicated to him through a single image. In all of these instances, these practitioners of various skills described a sensation of seeing more. They were suddenly able to grasp an entire situation through an image or an idea, or a combination of images and ideas. They experienced this power as intuition, or a fingertip feel. "
― Robert Greene , Mastery