The courage to delegate authority and accept responsibility. The courage to take the risk of moving outside the comfort zone -- to grow. The courage to move counter to "conventional wisdom" when conviction, not convention dictates and support it under the same when convictions demand. The courage to encourage others, subordinate, peers, superiors. Many other aspects or examples. In my experience without courage and ethics (loosely defined as doing the right thing even when no one is looking) you have no leader.