Though he avoided outright endorsement of the view, fifth-century Church Father Saint Augustine was clearly familiar with the theory of the spherical earth: "They [those who believe that "there are men on the other side of the earth"] fail to observe that even if the world is held to be global or rounded in shape, or if some process of reasoning should prove this to be the case, it would still not necessarily follow that the land on the opposite side is not covered by masses of water."
Angels are spirits, but it is not because they are spirits that they are angels. They become angels when they are sent. For the name angel refers to their office, not their nature. You ask the name of this nature, it is spirit; you ask its office, it is that of an Angel, which is a messenger.
It is not earthly riches which make us or our sons happy; for they must either be lost by us in our lifetime, or be possessed when we are dead, by whom we know not, or perhaps by whom we would not.
What the universal Church holds, not as instituted [invented] by councils but as something always held, is most correctly believed to have been handed down by apostolic authority. Since others respond for children, so that the celebration of the sacrament may be complete for them, it is certainly availing to them for their consecration, because they themselves are not able to respond.
... at the beginning of the human race the woman was made of a rib taken from the side of the man while he slept; for it seemed fit that even then Christ and His Church should be foreshadowed in this event. For that sleep of the man was the death of Christ, whose side, as He hung lifeless upon the Cross, was pierced with a spear, and there flowed from it blood and water, and these we know to be the sacraments by which the Church is built up.
The most venerable, clearly understood, enlightened, and reliable constant in the world is not only that we want to be happy, but that we want only to be so. Our very nature requires it of us.
The customs of God's people and the institutions of our ancestors are to be considered as laws. And those who throw contempt on the customs of the Church ought to be punished as those who disobey the law of God.
A Christian man is on his guard with respect to those who philosophize according to the elements of this world, not according to God, by Whom the world itself was made; for he is warned by the precept of the apostle and faithfully hears what has been said, 'Beware that no one deceive you through philosophy and vain deceit, according to the elements of the world'
Someone who knows enough to become the owner of a tree, and gives thanks to you for the benefits it brings him, is in a better state, even if ignorant of its height in feet and the extent of its spread, than another who measures and counts all its branches but neither owns it nor knows its creator nor loves him.
It will not be held against you that you are ignorant against your will, but that you neglect to seek out what it is that makes you ignorant; not that you cannot bring together your wounded limbs, but that you reject Him that would heal them.