When public speaking， pause frequently. Pause before you say something in a new way， pause after you have said something you believe is important， and pause as a relief to let listeners absorb details.
Your theory is crazy, but it's not crazy enough to be true.
The world is a great story, and we are the characters.
系统辨识的挑战不仅在于拟合数据，还在于提取有意义且可推广的模型。
西西弗的神话
