持续学习是应对技术快速变化的唯一途径。
Success often favors those who continually learn and adapt to change.
从n对观测值的样本中获得的相关系数的可能误差是sqrt((1-r²)/(n-2))。
I'm not going to let anyone tell me what to do.
Generally speaking, envy, resentment, and self-pity are disastrous modes of thoughts.Self-pity gets fairly close to paranoia, and paranoia is one of the very hardest things to reverse.
Becoming happier takes both a will and a proper way.