History of Aikido – Honored and Practiced at Brooklyn’s Oldest Dojo
Aikido is a traditional Japanese martial art created by Morihei Ueshiba (O-Sensei) in the early 20th century, as a synthesis and breakthrough out of the traditional jitsus of empty hand, sword and stick technique. O'Sensei's Aikido preserves the spirit of traditional budo in its most creative, positive spirit.
Composed of three Japanese characters: Ai, meaning harmony; Ki, spirit or energy; and Do, the path or the way. Aikido: “The Way of Unifying Energy”.
The Aikidoist trains to apply various wrist locks, arm pins or unbalancing throws to neutralize and control and subdue attackers without needing to inflict serious injury. Such practice is done in tandem with learning the art of falling, or “ukemi”, which trains the body and mind to receive techniques in a safe manner.
Since Aikido is not a sport there are no competitive tournaments. Everyone enthusiastically helps in each individual’s growth.
As a traditional Japanese budo, Aikido maintains the qualities of martial spirit, effective technique and intense training.
Aikido’s cultivates a spirit of protection. It aligns the body, releasing power from deeper and deeper sources, opening and connecting the channels of internal and external energy...
The Origins of Aikido in Japan
Aikido was developed in the early 20th century by Morihei Ueshiba, known respectfully as Ōsensei. Drawing from his deep experience in classical Japanese martial arts—particularly Daitō-ryū Aiki-jūjutsu—Ōsensei envisioned a martial path not focused on domination or destruction, but on harmony. Aikido, meaning “the way of harmonious spirit,” emerged as a discipline of both physical mastery and spiritual insight.
Morihei Ueshiba
Founder and VisionaryŌsensei was not only a martial artist but a deeply spiritual thinker. Influenced by Shinto and Omoto-kyo teachings, he believed that true victory comes from resolving conflict without harm. His movements became softer, more circular, and more centered—focused on redirecting energy, not resisting it. His vision transformed Aikido into a nonviolent martial art of self-defense, growth, and peace.
The Global Growth of Aikido After WWII
After World War II, Aikido began to spread internationally through the efforts of Ōsensei’s students. One of the key figures in this expansion was Yoshimitsu Yamada Shihan, who brought Aikido to New York and helped establish the United States Aikido Federation (USAF). Through these efforts, dojos began appearing around the world, including right here in Brooklyn.
Honoring Tradition at Aikido of Park Slope
Founded in 1981, Aikido of Park Slope is Brooklyn’s oldest and most established Aikido dojo. We are proud to carry on the teachings of Ōsensei and Yamada Shihan through our training, community, and commitment to lifelong learning. Our head instructor, Hal Lehrman Shihan, holds the rank of 7th Dan Aikikai and continues to guide students with clarity, care, and tradition.
Why Aikido Still Matters Today
Aikido offers something unique in the modern world: a martial art grounded in peace. While students gain physical skill, coordination, and strength, the deeper practice cultivates patience, resilience, and the ability to meet conflict without aggression. These lessons are as valuable now as ever—on the mat, and beyond it.
Experience the Living Tradition
We welcome students of all levels, backgrounds, and ages to explore the art of Aikido for themselves. If you're curious about training in a martial art that emphasizes balance, connection, and nonviolence, we invite you to try a free class at our Brooklyn dojo. This living lineage is not only honored here—it continues every day.
Principles of Aikido
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Harmony and Peace: Resolve conflict peacefully while protecting everyone involved.
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Non-Resistance and Blending: Harmonize with an opponent’s energy rather than opposing it.
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Mind-Body Connection: Integrate mental focus and physical movement for balance and effectiveness.
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Adaptability and Fluidity: Use circular, fluid movements to respond to changing situations.
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Self-Improvement: Focus on personal growth, discipline, and resilience through practice.
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Respect for All Life: Prioritize non-violence and compassion in every interaction.
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Unity and Connection: Embrace the interconnectedness of mind, body, and spirit.
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Energy Awareness: Cultivate and direct ki (life energy) for strength and focus.
These principles are demonstrated in every movement and learned concretely in the experience of doing. The excitement of discovery is part of everyday practice.
Aikido is fun and incredibly engrossing. The movements develop every muscle in a balance of toning, stretching and strengthening. Each individual defines their own practice. Training can be gentle and gradual or an intense aerobic workout.
Video by Ruth Peyser, 6 Dan, Shidoin. © 2015 Ruth Peyser. By permission only.