Pope Pius XI (1857-1939)

Pope Pius XI was head of the Catholic Church from 6 February 1922 until his death in February 1939. He was also the first sovereign of Vatican City upon its creation on 11 February 1929.

Quotes

Justice requires that to lawfully constituted Authority there be given that respect and obedience which is its due; that the laws which are made shall be in wise conformity with the common good; and that, as a matter of conscience all men shall render obedience to these laws.

Justice, Laws
It violates right order whenever capital so employees the working or wage-earning classes as to divert business and economic activity entirely to its own arbitrary will and advantage without, the social character of economic life, social justice, and the common good.