有时候最难的部分不是放手,而是学会重新开始。
There are no objects whose existence is indubitable.
Competitive strategy is about being different. It means deliberately choosing a different set of activities to deliver a unique mix of value.
统计学家不能逃避理解他所应用或推荐的过程的责任。
不是缺乏爱,而是缺乏友谊使婚姻不幸福。