Carol Glatz

Scientists worldwide must serve humanity and the health of the planet, which means they must also propose viable solutions to problems and persuade government leaders and policymakers to implement them, Pope Francis said.

A bishop must be "blameless" and at the service of God, not of cliques, assets and power, especially if he is ever to "set right" what needs to be done for the church, Pope Francis said.

The sin of grumbling and complaining is often triggered by a desire to avoid being challenged or upset by seeing Christ's unexpected mercy at work, Pope Francis said.

Life is for loving, not amassing possessions, Pope Francis said. In fact, the true meaning and purpose of wealth is to use it to lovingly serve others and promote human dignity.

Sharing the same roots as their Jewish brothers and sisters, Christians cannot be anti-Semitic and must work to ensure anti-Semitism is banned from society, Pope Francis said.

Saints include simple people "from next door, our relatives and acquaintances who now are part of that 'immense multitude'" in heaven, Pope Francis said, which makes the Nov. 1 feast of All Saints "a family celebration."

People must make "a serious examination of conscience to understand whether we are really capable of listening to the poor," the pope said in a message for the World Day of the Poor.

"Forgive us if often we have not listened to you; if, instead of opening our hearts, we have filled your ears. As Christ's church, we want to listen to you with love" because young people's lives are precious in God's eyes and "in our eyes, too," the pope said in his homily Oct. 28.

Humility, kindness and generosity are needed to create peace in the world, starting in one's own family, Pope Francis said.

"Christ reveals authentic love," the pope said Oct. 24 during his weekly general audience. "He is the faithful friend who welcomes us even when we make mistakes and he always wants what is best for us, even when we don't deserve it," he said.

With the launch of a new book, Pope Francis is calling for a new alliance -- between young and old -- to change the world.

Jesus shows Christians the rule they must live by: that they are there to serve, not be served, Pope Francis said.

The importance of helping young people become ethical, active citizens who are unafraid of taking part in politics was a topic brought up by two members of the Synod of Bishops Oct. 16.

Catholics need to help the church along a path of "deep spiritual renewal," Pope Francis told Jesuits from Lithuania, Latvia and Estonia.

Religions, which are meant to build bridges, contradict their very nature if they stop pursuing the path of peace, Pope Francis said.

One U.S. observer warned Pope Francis and the Synod of Bishops that the current immigration system in the United States "blatantly threatens" and disrespects the lives and dignity of migrants.

The devil is more dangerous when he is polite and friendly, persuading people to be "lukewarm" and worldly, than when he shows his true face and blatantly pushes people to sin, Pope Francis said.

Young people can discover Jesus and find guidance more easily in small faith-based communities and networks, several observers said at the Synod of Bishops Oct. 10.

Speaking to the Synod of Bishops on behalf of Belgium's bishops' conference, a bishop said he was sure some young married men would become priests if they were asked.

"One can say that all the evil done in the world can be boiled down to this: contempt for life," Pope Francis said at his general audience Oct. 10.