Movement in new direction helps find new cheese.
He asked himself those some questions too many times and felt the fears again that kept him where he was
Smell the cheese often so you know when it is getting old.
If you do not change, you can become extinct !
If you don't change, you will become extinct.
Sometimes, Hem, things change and they are never the same again. This looks like one of those times. That's life! Life moves on. And so should we.