If the sky is always dark, then live in darkness; If it is dangerous to make a sound, then keep silent; If you feel powerless to shine, curl up in the corner. But don't get used to the darkness and defend it; Don't be arrogant; Don't laugh at anyone braver than yourself. We can be humble as dust, but we can't be twisted as maggots.

This sentence is a famous saying of Mandela.

Time is the soil of all achievements in the world. Time brings pain to the dreamer and happiness to the creator. ? -McKinsey