The quality of a decision is not measured by the outcome, but by the process used to make it.
决策的质量不是由结果来衡量,而是由做出决策的过程来衡量。
If you're not stubborn, you'll give up on experiments too soon. And if you're not flexible, you'll pound your head against the wall and you won't see a different solution to a problem you're trying to solve.