The motto about attending classes carefully.

1. Whatever is worth doing is worth doing well.

2. If you persist in small things, then you must be a persistent person in big things and in your life.

3. Serious people only make mistakes once.

4. Earnestness is the secret of success, and carelessness is the partner of failure.

5. Doing things seriously only means doing things right, and doing things with your heart can do things well.

6. It is not simple to do every simple thing well, and it is extraordinary to do every ordinary thing well.

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