运气不好时金子可能变成铁，运气到来时铁也可能变成金。
Learning is not just about finding patterns, but about understanding the underlying mechanisms that generate those patterns.
No man, for any considerable period, can wear one face to himself and another to the multitude, without finally getting bewildered as to which may be the true.
Do not try to change the outer world; change your inner world, and the outer world will adjust itself.
All human knowledge is from experience.
What is the use of running when we are not on the right road?