From Ed Nagy:

Spirit is felt with the heart and not seen with the eyes. A spiritual energetic heart communicates with the physical heart through the heart's intelligence. Your heart is where love and spirit are joined. Solitude with silence is an important spiritual discipline for it is at that time when your heart is still and silent that you’re Divine Source or Spirit speaks to you. Your creator will fill your heart with the things that you need to learn and do. It will also guide you toward your life purpose. Most spiritual traditions in the world believe the heart is the portal to the soul and spirit. By connecting to your heart, you will find inspiration, insights and all the powers of the universe. It connects you to other people, those you love, those you were meant to know and all life within the world.