If you want to feel secure, do what you already know how to do. If you want to be a true professional and continue to grow... Go to the cutting edge of your competency, which means a temporary loss of security. So whenever you don't quite know what you're doing, know you're growing.

Any growth requires a temporary loss of security.

You touch the world even if you do not want it to touch you. -Leona Montgomery

To say that you have taught when students haven't learned is to say you have sold when no one has bought. But how can you know that students have learned without spending hours correcting tests and papers? . . . check students understanding while you are teaching (not at 10 o'clock at night when you're correcting papers) so you don't move on with unlearned material that can accumulate like a snowball and eventually engulf the student in confusion and despair.

Teaching is not telling and learning is not having been told.

I did indeed say you could have lovers. But I never promised that I would not kill them.

If you want to feel secure, do what you already know how to do. If you want to be a true professional and continue to grow... Go to the cutting edge of your competency, which means a temporary loss of security. So whenever you don't quite know what you're doing, know you're growing.