学习是系统中产生的任何变化，这些变化或多或少会永久性地改变其适应环境的能力。

"Mathematics is the music of reason."

I've learned that you can't control everything in your life, but you can control how you react to it.

"We're going on a bear hunt. We're going to catch a big one. What a beautiful day! We're not scared."

最好的交易者不是那些最常正确的人，而是那些在错误时损失最少的人。