VATICAN CITY -- A Nativity scene is a simple reminder of something astonishing: God became human to reveal the greatness of his love "by smiling and opening his arms to all," Pope Francis said in a letter on the meaning and importance of setting up Christmas cribs.

VATICAN CITY -- Theologians must explore and debate disputed questions, at times even taking "risks" with what they propose, but those discussions should take place within the academy so as not to confuse the faithful, Pope Francis said.

VATICAN CITY -- Pope Francis appointed a seasoned Italian finance inspector to lead the Vatican's financial watchdog agency following the resignation of its president.

ABOARD THE PAPAL FLIGHT FROM JAPAN -- Questions about Vatican finances, especially those involving a real estate deal in London, are serious, but they also are a sign that reforms begun by Pope Benedict XVI are working, Pope Francis said.

TOKYO -- Pope Francis spent his last morning in Japan at the Jesuit-run Sophia University, celebrating Mass with his Jesuit confreres, visiting aged members of the Jesuit community and addressing students and staff.

HIROSHIMA, Japan -- Saying it is "perverse" to think the threat of nuclear weapons makes the world safer, Pope Francis urged a renewed commitment to disarmament and to the international treaties designed to limit or eliminate nuclear weapons.

TOKYO -- Describing himself as a "missionary pilgrim," Pope Francis finally fulfilled a more than five-decade-old desire to share the Gospel in Japan.

BANGKOK -- Meeting Thai religious leaders and then celebrating Mass with Catholic young adults, Pope Francis encouraged them to strengthen a culture that treasures the past, holds fast to faith, is unafraid of differences and always seeks a way to promote dialogue and cooperation.