You cannot swim for new horizons until you have courage to lose sight of the shore.
除非有勇气看不到海岸,否则你无法游向新的地平线。
The truth is not in the words, but in the silence between them.
If ease of use was the only requirement, everyone would still be riding tricycles.
在没有其他信息的情况下,参数的最佳估计是其样本值。