Wittgenstein is a student of the famous philosopher Moore at Cambridge University. One day, the philosopher Russell asked Moore: "Who is your best student?" Moore said without hesitation: "Wittgenstein. " "Why "Because of all the students, only he always showed a blank look when he listened to the class, and there were always questions to be asked. " Later, Wittgenstein's fame surpassed Russell. Someone asked: "Why did Russell fall behind?" "Wittgenstein said," He has no problem. ". The text is intended to explain:. ['Doubts and questions are always the secrets to success.', 'Curiosity is the intrinsic motivation for research.', 'Recognition is an important factor for success.', 'Finding problems is a prerequisite for continuous improvement.']