Or to recycle.
I have observed that many people will not take 5 minutes a day to learn something new or recycle an idea. It is important for teachers to brush their thoughts up. I feel sad to see that most people just think they have nothing else to learn. You can learn by watching a video, reading a blog or even talking to a kid.
Recycle your ideas, be humble and understand that we need to keep learning for the rest of our lives.