Columbia subject headings:
Democracy--Religious aspects.
Faith and reason.
Multiculturalism--Religious aspects.
Religion and politics.
Secularism.
Harvard subject headings:
Catholic Church--Doctrines.
Christianity and law.
Democracy--Religious aspects
Democracy--Religious aspects--Catholic Church
Liberalism--Religious aspects
Secularism--Political aspects.
Princeton subject headings:
Catholic Church--Doctrines.
Christianity and law.
Democracy--Religious aspects--Catholic Church.
Democracy--Religious aspects.
Liberalism--Religious aspects.
Secularism--Political aspects.