Lumen Fidei chapter 4
Chesterton talks about how, when Christianity comes on the scene, God brings into the world the completely unreasonable virtues of faith, hope, and charity. We are asked to have charity for the unpardonable. Hope is only helpful when its cause seems lost. And faith is the seemingly unreasonable hope of life after the crucifixion. Yet it is these things, this in breaking of the Kingdom of God and of His love, that makes it possible for us to live together, to love each other and not use each other in utility. It makes the world a better place.
Faith is not “for the faint hearted.” It calls us to build just governments, to respect the created gifts given us, to respect life, and live in harmony. It is essential to the proper functioning of humankind and therefore we must never grow shy about proclaiming the faith and inviting others to enjoy it.
This is a brutally short and synopsis of this chapter. If it interests you, there is much more to read on the Vatican website!