Don’t stop when you’re tired. Stop when you’re done.

One can't proceed from the informal to the formal by formal means.

我们做产品不是为了炫技，而是要解决实际问题。

The challenge in computer science is not just to solve problems, but to find the right problems to solve.

To conquer fear is the beginning of wisdom.

赏析：指出灵巧的人和聪明的人往往会因为自己的才能而劳累和忧虑，而没有才能的人则没有太多的追求和烦恼。