Dr. Jack Yeh (Chih-Chun Yeh) | Motor Drive Architect | Robotics & Control Systems | Springer Author | IEEE Senior Member | Founder of MotorControl.School | Building the world's leading motor-control learning platform | U.S. NIW Approved
Modern Ronin Reflections
What resonates with me most about Miyamoto Musashi is not merely his solitude. It is this: He once seriously considered becoming part of the world. As a young man, Musashi also desired: * recognition, * honor, * status, * achievement, * and the possibility of serving a lord. He was not born detached from society.
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In 2022, I walked away from a stable job in Taipei, Taiwan. At the time, I was working as a PM for Rockwell Automation products at Solomon Technology. From the outside, it looked like a safe and respectable career path. But deep inside, I kept hearing a quiet voice: “This
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I’ve come to realize that many creators, artists, and thinkers begin to “converge” as they reach their forties. Not toward conformity — but toward clarity. When I was young, studying at Taipei Institute of Technology, I never fully fit into the traditional education system. I disliked rote learning and standardized
Modern Ronin Reflections
I have long felt that modern society teaches us a deeply misleading idea: “The inner matters more than the outer.” I believe this is incomplete. The truth is not that the inner is more important than the outer. The truth is: the inner and the outer matter equally. Because your
Modern Ronin Reflections
The older I get, the more I realize that silence is the language of the strong. When a person becomes internally aligned, they begin to feel the movement of energy very clearly. And language itself is a release of energy. You start noticing that whenever you constantly try to explain
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Today, my wife asked me an interesting question. She asked: Germany and Japan are both world-class nations known for craftsmanship, engineering, and quality. So why do they feel so different? I thought about it for quite a while. And I realized: Although both Germany and Japan pursue precision, quality,
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At the age of forty-four, I revisited Dragon Ball Z and finally understood what it truly meant. It was never just a story about fighting. It was about: growing stronger in solitude. What made Goku, Gohan, and Vegeta inspiring was never simply their power. It was this: Even knowing
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I have always felt that Japanese culture carries a unique kind of beauty — a beauty that is both elegant and tragic. It is a beauty born from impermanence. Sakura blossoms are breathtaking not because they last forever, but precisely because they are destined to fall. The spirit of Bushido carries
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Fifteen years later, I returned to this small izakaya. The posters were still there. The warm lights, the wooden walls, the atmosphere — unchanged. Back then, I had just graduated from graduate school. I worked in Nangang Software Park during the day, and at night, I often came here alone with
Modern Ronin Reflections
The older I get, the more I realize that sometimes, the highest-quality action is no action at all. Modern society constantly teaches us to move, to act, to prove ourselves. Some even say: “Don’t walk. Run.” But from my observation, people often spend their lives making poor decisions,
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Six years ago, I bought this Pelikan M800. Even today, it remains one of the smoothest fountain pens I have ever written with. German pens remind me of German cars. Rational, stable, and precise. They are not overly emotional, but they stay quietly reliable beside you for years. Over the
Modern Ronin Reflections
I do not believe that the place we are born should define our identity, culture, or inner belonging. I resonate deeply with some of Hannah Arendt’s ideas — that a human being should not be reduced to nationality, ethnicity, or inherited cultural labels. What matters to me is not where