134 Thus it came to pass that many, much more than ever before, were solely concerned with increasing their wealth by any means whatsoever, and that in seeking their own selfish interests before everything else they had no conscience about committing even the gravest of crimes against others. Those first entering upon this broad way that leads to destruction easily found numerous imitators of their iniquity by the example of their manifest success, by their insolent display of wealth, by their ridiculing the conscience of others, who, as they said, were troubled by silly scruples, or lastly by crushing more conscientious competitors.
Source: Quadragesimo Anno (Vatican.va)