Head to head communication is through thoughts and words, while heart to heart communication is through feelings. People, throughout the ages, have felt that they cannot communicate all our feelings through words, then we should be leading very shallow lives. Life is rich because feelings cannot be captured in words. So we use all these gestures - we hug, so that hearts come closer, we give flowers, so that feelings are conveyed... We put all our efforts into expressing our feelings... and still, feelings remain unexpressed.