Civilization is not inherited; it has to be learned and earned by each generation anew.

估计问题的性质与检验统计假设的问题不同。

"Love is the extremely difficult realization that something other than oneself is real."

别难过……世界上有许多人还不知道他们到底是谁或什么。

I know, I feel the meaning that words hide.

学习算法的研究必须同时考虑学习的统计和计算方面。