Use of Energy for Good in Judo — 精力善用 One of the Two Core Principles of Judo

This Japanese calligraphy scroll features the timeless phrase 精力善用 (Seiryoku-Zenyō) — translated as "Maximum Efficient Use of Energy." It is one of the two core principles of Judo, alongside 自他共栄 (Jita-Kyōei, "Mutual Welfare and Benefit"), both established by Judo’s founder, Jigoro Kano (嘉納治五郎).

Seiryoku-Zenyō teaches that our physical and mental energy should not only be used with efficiency and precision, but with purpose — for the betterment of others and society as a whole. True strength, according to this principle, lies not in domination, but in contribution: in applying our full capabilities to build peace, support others, and improve our communities.

In Judo and beyond, Seiryoku-Zenyō reminds us to:
・Use our energy wisely, not wastefully.
・Channel our strength into actions that benefit those around us.
・Devote ourselves to improving both ourselves and the world through meaningful effort.

精力 (Seiryoku) — Energy, both physical and mental
善用 (Zenyō) — Good and purposeful use

For judoka around the world, this principle is not only about efficiency — it is about responsibility. To use one’s energy in ways that uphold respect, cooperation, and human development.

Displaying this scroll in your dojo, home, or office serves as a daily reminder: Use your power not just for yourself, but in service of others — that is the true path of Judo.