“Married love particularly reveals its true nature and nobility when we realize that it takes its origin from God, who “is love,” the Father “from whom every family in heaven and on earth is named”

-Pope Paul VI, Humanae Vitae

“Wherefore it seems to me that friendship springs rather from nature than from need, and from an inclination of the soul joined with a feeling of love rather than from calculation of how much profit the friendship is likely to afford”

-Cicero, On Friendship

“Now whatever knows certain things cannot have any of them in its own nature; because that which is in it naturally would impede the knowledge of anything else. Thus we observe that a sick man’s tongue being vitiated by a feverish and bitter humor, is insensible to anything sweet, and everything seems bitter to it. Therefore, if the intellectualprinciple contained the nature of a body it would be unable to know all bodies.”

-San Thomas Aquinas, Summa Theologiae

“But what foul offenses can there be against You who canst not be defiled? Or what deeds of violence against you who canst not be harmed? But You avenge that which men perpetrate against themselves, seeing also that when they sin against You, they do wickedly against their own souls; and iniquity gives itself the lie, either by corrupting or perverting their nature”

-Saint Augustine, The Confessions