【說明】

內藤湖南，本名虎次郎，京都帝國大學文學部教授，是日本東洋史研究的奠基者之一，曾提出「文化中心移動說」與「唐宋變革論」。1908年，湯川秀樹之父小川琢治轉任京大文學部，因而和同在京大的內藤湖南建立深厚的交誼。秀樹雖未曾與內藤謀面，但父親與內藤的密切學術關係，使秀樹對內藤的學識與人格深抱敬意。當內藤聞悉秀樹立志從事物理研究時，曾予以高度讚許，此舉對秀樹頗具激勵作用。

本作以小字楷書縱書題寫「迴合天機」四字，並具落款與鈐印。
 

​【Description】

Konan Naitō, whose given name was Torajirō, was a professor in the Faculty of Letters at Kyoto Imperial University and one of the founding figures of Japanese studies of East Asian history. He proposed theories such as the shifting of cultural centers and the transformation between the Tang and Song dynasties. In 1908, Hideki Yukawa’s father, Takuji Ogawa, transferred to Kyoto Imperial University, where he formed a close scholarly friendship with Naitō. Although Hideki never met Naitō in person, the deep academic bond between his father and Naitō fostered in him a lasting respect for Naitō’s scholarship and character. When Naitō learned of Hideki’s decision to pursue physics, he offered high praise, which proved a source of encouragement to the young Hideki.

In this work, the four characters “Circling Back to the Hidden Order of Heaven” are written vertically in small regular script, with a signature and seals.