朋友比钱更好。几乎所有金钱能做的事情，朋友都能做得更好。在许多方面，有一个有船的朋友比自己有一艘船要好。

People can cry much easier than they can change.

估计问题的性质不同。在这里，我们不关心检验特定的假设，而是关心估计参数的值。

解析：善恶由心生，非由外物定。

"A book is a mirror: if an ape looks into it, an apostle is hardly likely to look out."

Never underestimate the power of small, consistent improvements.