See this online text:

See also these commentaries on the encyclical:

See also the following materials or index of materials concerning the encyclical:

Posted on the occasion of World Humanist Day 2018. For other texts and ebooks, you may access the List of Free eBooks (Arranged by Title), the List of Free eBooks (Grouped by Subject), the List of Worth-It Catholic Books & eBooks, and the main page of the Catholic eBooks Project. From the text:

“Only if we are aware of our calling, as individuals and as a community, to be part of God’s family as his sons and daughters, will we be able to generate a new vision and muster new energy in the service of a truly integral humanism. The greatest service to development, then, is a Christian humanism that enkindles charity and takes its lead from truth, accepting both as a lasting gift from God.

“Openness to God makes us open towards our brothers and sisters and towards an understanding of life as a joyful task to be accomplished in a spirit of solidarity. On the other hand, ideological rejection of God and an atheism of indifference, oblivious to the Creator and at risk of becoming equally oblivious to human values, constitute some of the chief obstacles to development today. A humanism which excludes God is an inhuman humanism

“Development requires attention to the spiritual life, a serious consideration of the experiences of trust in God, spiritual fellowship in Christ, reliance upon God’s providence and mercy, love and forgiveness, self-denial, acceptance of others, justice and peace… All this is of man, because man is the subject of his own existence; and at the same time it is of God, because God is at the beginning and end of all that is good, all that leads to salvation…”