过早的优化是万恶之源。
Premature optimization is the root of all evil.
成功不是一种权利,必须通过努力获得。
The periodic table hasn't changed, but how we use its elements must.
The dog is called Sandy. I like Sandy. He is not clever but he is very cheerful.
乐观是一种可以学习的技能。一旦你学会了它,你就能在各个方面改善你的生活。