He confessed he would like to write an encyclical on peace, but the next pontiff will likely have to write it.
He visited Hiroshima and Nagasaki where he met with the Emperor of Japan and met with victims from the Fukushima nuclear disaster.
The pope visited the two cities destroyed by the atomic bombs during WWII.
The last event in Japan was a visit to Sophia University, founded by Jesuits in 1913.
He reflected on growing problem of narcissism, telling the young people if they want to grow they should leave more space for others.
He met with the Japanese prime minister, who expressed Japan's willingness to lead the world to nuclear disarmament.
He celebrated Mass in Tokyo with more than 50,000 people.
He asked to resist the temptation of technological progress without control and with enormous destructive potential.
He says nuclear weapons are a crime against the future.
“Let us speak out and insist that religious freedom be guaranteed for everyone in every part of our world. Let us also condemn the manipulation of religions,” he asked on the hill where Paul Miki and 25 other Christians were martyred.
“International peace and stability are incompatible with fear of mutual destruction or threat of total annihilation,” he recalls.
He celebrated evening Mass at the Cathedral of the Assumption in Bangkok, to conclude his time in Thailand.
He had an interreligious meeting at the most important university in Thailand.
He reflected on how to not give up missionary spirit when Catholics are in the minority.
He met a thousand priests and religious in the second largest Catholic community in Thailand.
He remembered the first missionaries who brought Christianity to the country 350 years ago, creating a Christian community and family.
Eight hundred Thai women danced in the Bangkok National Stadium at the conclusion of the pope's first Mass in Thailand.
He visited the sick, doctors and nurses of the St. Louis Hospital of Bangkok.
The two leaders spent more than thirty seconds with their hands clasped together during their first greeting.
He met with the prime minister at the spectacular Governamental House in Bangkok.
The pope was greeted by a small crowd cheering and waving flags.
The pope will begin his apostolic trip to Japan and Thailand with a message of peace.