With respect to international law, Martin said, "International law is applied among various countries and it cannot owned by a single country" (legend in "Bankoku Koho") and he understood that these official rules existed among European and American countries were as one of the best results generated by Christian civilization.
マーティンは国際法について「諸国間に行われ、一国が私することができない」（『万国公法』凡例）と述べ、欧米各国間に存在するこの公的なルールこそキリスト教文明が生み出した最良の成果の一つと捉えていた。