"If the application of economic and social principles turns out well, it is probable that the insistence on philosophical speculation will fade out. As a matter of fact, this has already happened in certain places, as for instance in Poland. What is more, the most recent statements of Togliatti concerning antireligious tactics show how Marxism must evolve in its theory, if in practice it has shown that religion is not “the opium of the people.”"
January 1, 1970
https://en.wikiquote.org/wiki/Camilo_Torres_Restrepo