种树的最佳时间是20年前，次佳时间是现在。

If you cannot do it, then teach.

A company's true value is measured by how it treats its lowest-paid workers.

"The success of machine learning depends on the ability to balance the trade-off between bias and variance in the models we build."

The greatest thing you'll ever learn is just to love and be loved in return.

我们都在阴沟里，但仍有人仰望星空。

You can't let fear stop you from living your life.