You haven't taught until they've learned.
Ability is a poor man's wealth.
Every day, try to help someone who can't reciprocate your kindness.
An effective leader allows exceptions to the rule for exceptional results or when circumstance demands.
Mix idealism with realism and add hard work. This will often bring much more than you could ever hope for.
Leaders must have patience for those under your supervision. Don't expect too much too soon. Maybe it was easy for you, but that doesn't mean it's going to be easy for somebody else. Be sure you have patience.