Diuturnum Illud

Diuturnum Illud

An encyclical letter written by Pope Leo XIII in 1881 in response to increased civil unrest in Europe by anarchists and communists. It states that Christians owe obedience to the state and recommends that they work within the state for positive social change. It also criticizes social contract theory.
References in periodicals archive ?
Subsequently, he forged a political doctrine with a series of encyclicals: Diuturnum illud (1881) on the divine origin of power, Immortale Dei (1885) on the Christian constitution of Nation-states, and Libertas praestantissimum (1888) on the Christian conception of human freedom.
See Benedict XVI, Caritas in Veritate, 53; Leo XIII, encyclical letter Diuturnum Illud (June 29, 1881); Pius VI, encyclical letter Quod Aliquantum (March 10, 1791).
Leo XIII, Diuturnum illud, On Civil Government, June 29, 1881, tr.