In the quest to understand quantum gravity, we are like children playing on the shore of a vast ocean, occasionally finding a smooth pebble or a pretty shell, while the great ocean of truth lies undiscovered before us.
To this day, I have never taken a course anywhere, in chemistry, economics, psychology, or business.
时至今日，我从未在任何地方选修过化学、经济学、心理学或商业课程。
The greatest glory in living lies not in never falling, but in rising every time we fall.
