- Allegory, 57.
- Angels, 9, 175.
- Apostles, their work in the world, 9, 77, 80, 153.
- Astrology, superstitions of, absurd, 165.
- Baptism, Sacrament of, 77, 139, 140.
- after state of those who die without, 122.
- Beatitude. See End of Man.
- Bible, harmony of. See Testaments.
- inspired by God, 56, 57, 58, 206.
- misinterpretation of, cause of heresies, 193, 202.
- reading of, helpful to holiness of life, 57.
- Blessed Sacrament. See Eucharist.
- Trinity. See God.
- Virgin. See Mary.
- Cause, First. See God.
- Ceremonies, meaning and importance of, 42, 49, 63, 140, 152.
- Chalice, 8.
- Charity, twofold precept of, 128.
- Christian life, end of, 43, 51.
- most perfect life, 43, 45, 51.
- sure means of happiness, 49.
- Christianity, truth of, evidenced by spiritual lives of Christians, 7, 67, 71.
- by external conduct, 71.
- the only true religion, 157.
- See also Jesus Christ.
- Church, the, Head of. See Pope.
- a monarchy, 191.
- perpetuity of, 192, 202.
- unity of, 190, 193, 201, 203.
- Church (a material building), symbolical meaning of, 152.
- Cloister. See Religious life.
- Commandments, the, 130.
- Confession of sins, 139, 142.
- Confirmation, Sacrament of, 139, 141.
- Contemplation of Divine things, 28, 44, 60, 153.
- Creation, doctrine of, does not contradict reason, 108.
- errors on the subject of, 160.
- Creed, the Christian, 99.
- Cross of Christ, veneration of the, 11, 76, 77, 162.
- Doctors of the Church, 8.
- Doctrines of Christianity are true, 35, 74.
- moral, of Christ, excellency of, 130, 133.
- End of Christian life, 43, 51, 81.
- of man is God, 27, 47.
- not attainable in this world, 28.
- errors on the subject of, 158.
- Epilogue, 204.
- Errors of astrologists, 165.
- of ancient philosophers, 158.
- of heretics, 190.
- Eucharist, the Blessed, 8, 11, 76, 77, 139, 141,
145.
- objections against, refuted, 148.
- Example, influence of, 69, 71.
- Extreme Unction, Sacrament of, 139, 143.
- Faith leads to God and holiness of life, 51, 75.
- in itself not sufficient, 76.
- never at variance with reason, 4.
- objects of, 15.
- why necessary, 16, 97.
- First principles must be accepted, 10.
- God, existence of, demonstrated, 17.
- the First Cause, 5, 18, 53.
- incomprehensibility of, 97.
- knowledge of, 23.
- perfections of, 21.
- providence of, 25, 27, 49.
- Pure Act, 20.
- Simple Substance, 20.
- Trinity of Persons in, 8, 9, 101.
- unity of nature proved, 22, 101.
- Happiness. See End of Man.
- Head of Church. See Pope.
- Hell, justice of, 113.
- Heresy, untruthfulness of, 190, 193.
- cause of, misinterpretation of Scriptures, 193, 202.
- Hierarchy in the Church, 144.
- History witnesses to Jesus Christ, 12.
- Holy water, 154.
- Idolatry, folly and sinfulness of, 174.
- Images, sacred, respect for, 152.
- Immortality. See Soul.
- Incarnation, 100.
- doctrine of the, not contrary to reason, 114.
- Intellect, human, not infallible, 30.
- Invisible things revealed through visible, 5, 15.
- Jesus Christ, virginal birth of, 117.
- truly God, 11, 74, 91.
- truly man, 100.
- goodness of, evidence of truth of Christianity, 86.
- power of, 74.
- wisdom of, 81.
- wonderful works of, 74, 91, 118.
- Jews, their testimony to Jesus Christ, 11, 180.
- their doctrine illogical, 75, 179.
- Keys, power of the, 143.
- Koran. See Mahomet.
- Laws, natural, human, divine, 133.
- Mahomet, personal character and life of, 195.
- teaching of, 195.
- refutation of, 196.
- Martyrs, 8, 9, 209.
- Mary, Mother of God, 8, 76, 77, 208.
- veneration of, 11, 77, 152.
- Matrimony, Sacrament of, 140, 147.
- Matter and form, 19.
- Means to attain end of man, 51.
- Messiah, coming of, foretold, 180.
- See also Jews.
- Ministers. See Hierarchy.
- Miracles of Jesus Christ, 7, 77.
- Morality, Christian teaching on, 130, 143.
- Orders, Holy, Sacrament of, 140, 144.
- Original sin, doctrine of, not opposed to reason, 121, 124.
- explanation of, 119.
- how remitted, 123.
- Passion of Jesus Christ, 7, 8, 123.
- Patriarchs, 8.
- Peace of soul fruit of holy life, 67.
- Penance, Sacrament of. See Confession.
- Persecution testifies to truth of Christianity, 78, 91, 209.
- Philosophers prepared way for Jesus Christ, 82, 164.
- Pope, the, successor of St. Peter, 78, 192, 202.
- infallibility of, 100, 127, 193.
- primacy of, 192.
- supremacy of, 193.
- Prayer, efficacy of, 62.
- made through Jesus Christ, 61.
- evidence of Christianity, 60.
- Preacher, Scripture useful to, 58.
- influence of life of, 82.
- Priesthood, double power of, 145.
- See Orders.
- Processions, the Divine, 101.
- Prologue, 3.
- Prophets, 8, 55.
- Providence. See God.
- Purity of heart necessary for happiness, 48, 73.
- Real Presence. See Eucharist.
- Reason never contradicts faith, 4, 104.
- not sufficient guide in itself, 16, 97, 158.
- Relics of Saints, 9, 77.
- Religion, necessity of, 41.
- external. See Ceremonies.
- interior, 42, 67.
- the Christian. See Christian life.
- Religious life, the, 12, 69, 73, 132.
- Resurrection of the body, 110.
- Revelation, 41. See also Bible.
- Roman See. See Pope.
- Sacraments derive power from Passion of Jesus Christ, 9, 137.
- number of (seven), 139.
- salutary effects of, 64, 146.
- Saints, 8, 11, 77, 152, 175.
- Savonarola, motive of, in writing Triumph of Cross, 3.
- preaching of, 58.
- Scripture. See Bible and Testament.
- Senses, bodily, not infallible, 30.
- reflect grace and virtue in soul, 72.
- Soul of man, form of body, 33.
- not generated, 34.
- immortal, 33, 111.
- errors on subject of, 159.
- Supernatural, religion must be, 97, 100, 104.
- Testaments, the Old and New, 8, 56, 202.
- Trinity. See Blessed.
- Triumph of Christ, 7.
- of the Cross, 8, 74.
- Triumphal car, a simile, 7.
- Vessels, sacred, 8, 154.
- Vestments, 154.
- Virgins and the virginal life, 8, 12, 153.
- Vision of God. See End of Man and End of Christian.
- Vows, the religious, 69, 132.