南怀瑾：世间法不空，与般若有挂碍，等于眼中有沙，认生死轮回为实有；出世间法不空，与般若亦有挂碍，等于肉中有刺，认化城为宝所；故有凡夫生死、二乘涅盘的颠倒梦想。

Every man has his secret sorrows which the world knows not; and often times we call a man cold when he is only sad.

The thing that we are trying to do at Facebook, is just help people connect and communicate more efficiently.

质量不是一个部门；它是一种心态。