Don't be dismayed at good-byes. A farewell is necessary before you can meet again. And meeting again after a moment or lifetime is certain for those who are friends.
Learning is finding out what you already know, Doing is demonstrating that you know it, Teaching is reminding others that they know it as well as you do. We are all learners, doers, and teachers.
The bond that links your true family is not one of blood, but of respect and joy in each other's life. Rarely do members of one family grow up under the same roof.