In March 2003, in his capacity as honorary president of the Third World Water Forum, he delivered a speech at the forum's opening ceremony titled "Waterways Connecting Kyoto and Local Regions". Visiting Mexico in March 2006, he gave the keynote address at the opening ceremony for the Fourth World Water Forum, "Edo and Water Transport". And in December 2007, he gave a commemorative talk at the opening ceremony for the First Asia-Pacific Water Summit, "Humans and Water: From Japan to the Asia-Pacific Region".[31]