Nikola Tesla had many behaviors that most would consider obsessive. He would walk around a block three times before entering a building and clean his plates with 18 napkins. When he stayed in hotel rooms the number of the room would always be divisible by 3, he actually done everything in sets of 3 and he would calculate his environment to make sure everything around him worked in line with this mystical number.
Perhaps some of his behavior was the result of obsessive-compulsive disorder and superstition, but as seen by his achievements there was a lot more method to some of his madness, and the truth to this is explored in this video.
“If you knew the magnificence of the three, six and nine, you would have a key to the universe.” – Nikola Tesla