【說明】

湯川秀樹最初全心投入學術研究，然而，當原子彈的威力以殘酷的現實展現在世人眼前，加上冷戰局勢升溫、全球核武競賽加劇，他的關懷也因此產生轉變。他意識到科學家不應僅一昧追求知識的突破，更應正視研究成果可能對人類社會造成的影響。他積極投身和平運動。後來他常揮毫書寫「世界は一つ」（世界是一體），今日京都國際會議中心入口亦設有同名紀念碑。

【Description】
Hideki Yukawa initially devoted himself wholeheartedly to academic research. However, as the destructive power of the atomic bomb was revealed to the world in stark and brutal reality—and as Cold War tensions intensified alongside the global nuclear arms race—his concerns shifted. He came to recognize that scientists also needed to consider the social impact of scientific research.
Hideki became deeply engaged in peace movements. In later years, he frequently inscribed the phrase Sekai wa hitotsu—“The world is one”—to articulate his vision of peace. Today, a monument bearing this inscription stands at the entrance of the Kyoto International Conference Center.