"Pope Francis also gave a message of peace and three bound papal documents — including his 2015 encyclical titled Laudato Si on the need to protect the environment — which to some degree define his papacy and priorities, including the family and the environment.
The Pope told Mr Trump he signed the message 'personally for you'. Mr Trump said he would read the books."
http://www.abc.net.au/news/2017-05-24/trump-given-popes-climate-change-essay-in-vatican-meeting/8555954