除非你开始改变内在，否则无法改变周围的一切。
You can't change what's going on around you until you start changing what's going on within you.
成功是从一个失败跌到另一个失败而不失去热情。
我正充实地生活着，不会浪费任何时间。
Every mathematical problem is a puzzle waiting to be solved, and every solution is a step closer to understanding the fabric of reality.
我不是一个回头看的人。我总是向前看。