All of the sense organs are both organs and capacity. The synthesizing acting of the heart continuously creates a unity of the inner world and outer world. Moments in which we perceive this unity are moments of the experience of beauty. Beauty is thus a consciousness of the heart. The heart has always been connected with love due to this relation between bringing what seems to be separated into conjoining as profound beauty.
People have always wondered at the saints, that they are able to walk around serene, whatever happens. But that is because they can choose where they'll be. They don't have to be angry. You see the difference between having scattered emotions and having a fully vibrating, controlled emotional body. This body is made from energy created from choice, from the effort involved in making choices. But it is necessary to practice; then something is possible.