古之立言者，皆有所为而为之，非苟而已也。
古代著书立说的人，都是有所为而为之，不是随便写写的。
Loneliness is not a lack of company, but a lack of purpose.
In the end, we will remember not the words of our enemies, but the silence of our friends.
未来属于那些能够驾驭数据力量的人。
Life is short, and it's up to you to make it sweet.
