In all things — except love — start with the exit strategy. Prepare for the ending. Almost anything is easier to get into than out of.
教师必须具有健康的体魄,农人的身手,科学的头脑,艺术的兴味,改革社会的精神。
只要下定决心,你可以做到任何事情。
相关系数的可能误差不是一个固定的量,而是取决于样本的大小。
The true history of a people is written in the margins of official history.
"The key is not to eliminate fear, but to control it."