“But what is Pacem in Terris’s most important contribution in the context of the genesis of Gaudium et Spesis its repeated recourse to‘the signs of the times’ as measures and tools with which to comprehend the reality of a constantly changing world. The innovation of this approach lies in its implied recommendation to study in all seriousness contemporary reality and society in order to determine in which way the values of the Gospel have materialized in today’s world. Rather than relying on pre-established and traditional doctrine to judge present-day reality, Catholic believers are enjoined to place trust in investigatory methods that could be described as sociological, historical, and anthropological, before making value judgements on the phenomena of today’s world” ValuesHistorySociologyAnthropologyVatican IiPacem In Terris Book:The Spirit of Vatican II: Western European Progressive Catholicism in the Long Sixties Source: The Spirit of Vatican II: Western European Progressive Catholicism in the Long Sixties