The tyrant dies and his rule is over, the martyr dies and his rule begins.
你给予的越多,得到的回报就越多。
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))。
The only limit to our realization of tomorrow will be our doubts of today.
To love is to risk being destroyed. To not love is to destroy yourself.