One of most bitter and recurrent issues in history of independent Mexico has been relationship between church and state. Independence was achieved in a manner that left question of desirable form of relations between church and state a point of bitter dispute between liberals and conservatives. At stake in this dispute were not only eco nomic power and privilege of Roman Catholic Church and its functionaries but also antagonistic notions of type of society which Mexico should become, that is, a variant of a feudal society or a modernizing capitalist republican society. It would not be too much to suggest that this fundamental cleavage within political, economic, and clerical elites was a, if not the, key factor in political instability of Mexico from independence until coming of regime of Porfirio Diaz in 1870s. It is not purpose of this study to review vast literature on church-state conflict during first half century of Mexican independence. Rather its purpose is to comment on conflict's explosive resurgence during Revolution of 1910-1917. The definitive triumph of liberals expressed by Consti tution of 1857 and then regained in bitter and protracted War of French Intervention represented a great setback for church power and a significant victory for liberal conception of church-state relations. The politics of conciliation carried out by Diaz halted attempts to continue to roll back church power but did not restore church to its previous position. The Revolution of 1910-1917 did not start with anticlericalism as a significant issue. However, it did emerge as a salient issue for triumphant coalition in Revolution, Constitu tionalists, but not for Zapatista-Villista alliance, which has come to be known as the convention. After split in convention of Aguas Calientes in 1914, itself a last attempt to