The truth cannot belong to a particular class, but its distortion may be class-based.

The Church must condemn the oppression and exploitation of man by man, first and foremost, from a moral and spiritual standpoint, and not in the name of any social system.

It must bless the quest for a more just and humane social order and trust in the initiative, activity, and freedom of man in the struggle for a better future.

[Excerpt from the text on the back cover of the edition]