The chapter claims that love is one of the few realities that can be fully known only through participation. Parents do not attend a school before loving children, and spouses do not need a technical manual before recognizing the shape of conjugal love. Explanation can assist, but it does not create comprehension.
That means spiritual formation cannot stop at information. A person may understand a doctrine of love and still remain emotionally illiterate. Love becomes intelligible through direct experience as child, sibling, spouse, and parent.
This is one reason religious communities fail when they rely too heavily on verbal instruction. They may produce people who can define love without people who have actually been formed by it.