The probable error of a correlation coefficient is not a thing which can be deduced from first principles, but must be found empirically.
相关系数的可能误差不是可以从第一原理推导出来的东西，而是必须通过经验找到的。
You have to be passionate about what you do. If you're not passionate, you won't succeed.
释义：强调意识形态斗争的极端重要性。
能够想象任何事的人，可以创造不可能。
解析：经常反省检查自己，不给私欲留空间。
The key to success in trading is discipline and risk management.