All changes, even the most longed for, have their melancholy; for what we leave behind us is a part of ourselves; we must die to one life before we can enter into another.

The moment eternal—just that and nothing more.

这世上到处都是心碎的人。

Thoughts pass in my mind like flocks of lucks in the sky.I hear the voice of their wings .

A company's values are its compass in times of uncertainty.

学习数学的唯一方法就是做数学。