Would you like yourself, if you met yourself?

Criticise privately but compliment publicly.

Good becomes better by playing against better, but better doesn't become the best by playing against good.

If you see improvement with some practice, you will see perfection with more practice.

If the successor does better than the ancestor world remembers the successor, like the maker of a car, is still remembered but not the maker of a bullock cart.

Any work is always improvable, you cannot really finish the work, you can only abandon it out of tiredness or incompetence.

Improvement is not enough, you also needs innovation.

Improvement is not enough, you also need innovation.