Sollicitudo Rei Socialis §5

⁵ As soon as it appeared, the document of Pope Paul VI captured the attention of public opinion by reason of its originality. In a concrete manner and with great clarity, it was possible to identify the above mentioned characteristics of continuity and renewal within the Church's social doctrine. The intention of rediscovering numerous aspects of this teaching, through a careful rereading of the Encyclical, will therefore; constitute the main thread of the present reflections. But first I wish to say a few words about the date of publication; the year 1967. The very fact that Pope Paul VI chose to publish a social Encyclical in that year invites us to consider the document in relationship to the Second Vatican Ecumenical Council, which had ended on December 8, 1965.