Ekiken was originally a student of Wang Yangming's brand of neo-Confucianism, but turned to following the teachings of Zhu Xi years later; late in his life, he had questions and doubts about Zhu Xi's teachings, and compiled these into a text titled Taigiroku (大疑録, lit. "Great Doubts Record"). He is often also credited with writing the Onna daigaku (女大学, "Greater Learning for Women"), a volume on morals and proper behavior for women.
- "Kaibara Ekiken." Digital-ban Nihon jinmei daijiten デジタル版 日本人名大辞典. Kodansha, 2009.
- Yonemoto, Marcia. Mapping Early Modern Japan. University of California Press, 2003. p69.
- Plutschow, Herbert. A Reader in Edo Period Travel. Kent: Global Oriental, 2006. p12.
- Albert M. Craig, The Heritage of Japanese Civilization, Second Edition, Prentice Hall (2011), 74-75.