If a tree falls in the woods

If a tree falls in the woods, and no one is around to hear it, does it make a sound? Aah... I remember this debate in science class. The debate centers around the definition of sound. Dictionary.com defines sound as "the sensation produced by stimulation of the organs of hearing by vibrations transmitted through the air or other medium". This definition seems to require ears to be sound. But wait, this is a blog about leadership, isn't it? If a leader performs the activities of a leader, and no one is around to hear it, are they really a leader? Can someone be a leader only in their heart? There are definitely those who seem to be born with the heart of a leader (passion), and those who have learned the skills of a leader, but how do you recognize them as leaders?  Are leadership activities leadership? Or do you need "ears" for leadership?  Does your leadership make a sound?  The debate continues...