I. How does our reason point out the truth of the Catholic religion?
Our reason points out the truth of the Catholic religion by these principles: first, there is a ; second, the of man is immortal; third, all men are obliged to practice ; fourth, the religion God has revealed through is worthy of belief; fifth, Christ established a which all are obliged to join; sixth, the only true Church of Christ is the Church.

II. How can we prove that there is a God?
We can prove that there is a God because this vast universe could not have come into , nor be so beautiful and orderly, except by the almighty power and the wisdom of an eternal and Being.

III. How can we prove that the soul of man is immortal?
We can prove that the soul of man is immortal because man's acts of intelligence are ; therefore, his soul must be a spiritual being, not dependent on , and hence not subject to decay or death.

IV. How we prove that all men are obliged to practice religion?
We can prove that all men are obliged to practice religion because all men are entirely dependent on God and must recognize that dependence by Him and praying to Him.

V. How can we prove that the religion God has revealed through Christ is worthy of belief?
We can prove that the religion God has revealed through Christ is worthy of belief, because: first, Jesus Christ, Himself as the ambassador and the true Son of God, whose coming was by the prophets, preached doctrines which He said all must believe; second, Christ worked wonderful , which show that the God of truth approved His teachings.