检验统计假设的问题是估计的一般问题中不可分割的一部分。

上帝在他的天堂——世界一切安好！

Courage is the most important of all the virtues because without courage, you can't practice any other virtue consistently.

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

"We are all in the gutter, but some of us are looking at the stars."

预测未来的最好方法就是创造未来。