Wittgenstein was a student of Moore, a famous philosopher at Cambridge University. One day, philosopher Russell asked Moore, who is your best student? Moore said without hesitation: Wittgenstein. why? because among all the students, only he always showed a blank look when listening to the class, and there were always endless questions. later, Wittgenstein is more famous than Russell. Someone asked, why did Russell fall behind? Wittgenstein said: he has no problem.
intended to illustrate that:
Doubting and questioning are always the secret of success