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。

To any artist, worthy of the name, all in nature is beautiful, because his eyes, fearlessly accepting all exterior truth, read there, as in an open book, all the inner truth.

"I can resist everything except temptation."

I know that self-promotion happens a lot and it is not a bad thing. But I do not regard it as something positive.

To live in the hearts we leave behind is not to die.