Pacem in Terris §162

¹⁶² We would remind such people that it is the law of nature that all things must be of gradual growth. If there is to be any improvement in human institutions, the work must be done slowly and deliberately from within. Pope Pius XII expressed it in these terms: "Salvation and justice consist not in the uprooting of an outdated system, but in a well designed policy of development. Hotheadedness was never constructive; it has always destroyed everything. It has inflamed passions, but never assuaged them. It sows no seeds but those of hatred and destruction. Far from bringing about the reconciliation of contending parties, it reduces men and political parties to the necessity of laboriously redoing the work of the past, building on the ruins that disharmony has left in its wake."68