Religious aspects Catholic Church 1,665 Christianity 982 History 267 Marriage 186 Perfection 175 Catholic authors 164 Peace 152 Spiritual life 147 Doctrines 139 Christian life 134 Love 131 Death 100 Initiation rites 99 Poverty 91 Religious life 83 History of doctrines 80 Catholic Worker Movement 76 Authority 73 Moral and ethical aspects 68 Liturgy 67 Labor 65 War 62 Families 61 Suffering 61 Church and social problems 53 Christian ethics 50 Education 50 Abortion 49 Women 49 Reconciliation 46 God 45 Nonviolence 45 Communication 42 Study and teaching 42