When I was a kid, I took a martial arts class for a year or two. It wasn’t particularly structured, and I think it was just my mom’s way of burning off my energy in a controlled environment to prevent me from destroying the house. Based on the amount of patched drywall in the house where I grew up, it didn’t work very well. I honestly don’t remember much from those classes. But one thing I do recall is the concept of “aikido,” a Japanese martial arts style that involves using your opponent’s movements and momentum to your own advantage. There’s a certain elegance to aikido, and a core philosophy behind it that’s worth remembering in other areas of life—including investing.… Read more