When a large portion of Catholics ignore or reject a church teaching, it is often a sign that social and cultural pressures are weakening their faith, the document says.
The Francis Chronicles: Pope Francis said legalizing marijuana and other "recreational drugs" has little impact on the criminal organizations trafficking drugs around the world.
The Francis Chronicles: "There is no sickness whatsoever. If there was, we would be open about that and asking people to pray for him."
Engaging in or supporting missionary activity allows Christians to enter the "flood of joy" that comes from experiencing God's love and sharing it with others, Pope Francis said.
"The Lord's disciples persevere in joy when they sense his presence, do his will and share with others their faith, hope and evangelical charity," the pope said in his message for World Mission Sunday, which will be celebrated Oct. 19.
Pope Francis expressed his fears over increasing violence in Iraq and prayed for peace, security and reconciliation in the country.
He also announced he would be visiting Albania Sept. 21 to encourage the Catholic minority there and the people "who long suffered as a result of the ideologies of the past."
For everyone who has any kind of authority over others, the one sin "at your fingertips" is the sin of corruption, Pope Francis said.
And "the martyrs of corruption" -- those who end up paying the price for the politicians, financiers and church officials who abuse their power -- are the poor and the marginalized, he said during his early morning Mass Monday in the Domus Sanctae Marthae, where he lives.
Francis Chronicles: "I believe that interreligious dialogue must investigate the Jewish roots of Christianity and the Christian flowering of Judaism. ... It is possible to live as brothers."
Pope Francis formally announced six men and women would be made saints Nov. 23, the feast of Christ the King. He made the announcement Friday during a morning "ordinary public consistory," a meeting of cardinals and promoters of the sainthood causes that formally ends the sainthood process.
The same day, he advanced the sainthood causes of eight men and women, including Mother Magdalen Taylor -- an Anglican convert and British foundress of a religious order.
Informed observers are speculating that the pope might add another destination to his first Asian trip -- one that would mark the voyage as truly historic.
The continued meetings between the two religious leaders have provoked speculation about whether the two churches may one day be reunited after nearly 1,000 years of estrangement.