True love in this chapter is not treated as one virtue among many. It is the operating principle that makes harmony, equality, inheritance, and perfection possible. The chapter moves from love as peace-producing power, to love as endless self-investment, to love as the center where vertical and horizontal reality meet, and finally to love as the means of human completion.
The strongest repeated pattern is that love grows by being given. This makes love unlike force, knowledge, or material power, and explains why the chapter treats love as the one thing capable of uniting all levels of reality.