我认为这是最好的建议:不断思考如何做得更好,并质疑自己。
Giving up smoking is the easiest thing in the world. I know because I’ve done it thousands of times.
经济学家正确地预测了过去五次衰退中的九次。
免费的疫苗比昂贵的治疗更有价值,但更难推广。
You can't just sit there and wait for people to give you that golden dream. You've got to get out there and make it happen for yourself.
Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.