Pope John XXIII
Pacem in Terris §151
Pacem in Terris: On Establishing Universal Peace in Truth, Justice, Charity, and Liberty
151 In traditionally Christian States at the present time, civil institutions evince a high degree of scientific and technical progress and possess abundant machinery for the attainment of every kind of objective. And yet it must be owned that these institutions are often but slightly affected by Christian motives and a Christian spirit.
Source: Pacem in Terris (Vatican.va)