The only way to learn mathematics is to do mathematics.
领导力意味着今天做出艰难的决定,为未来的几代人带来好处。
It's not whether you're right or wrong that's important, but how much money you make when you're right and how much you lose when you're wrong.
It is common sense to take a method and try it. If it fails, admit it frankly and try another. But above all, try something.