Mathematics is the art of giving the same name to different things.
The most common way people give up their power is by thinking they don't have any.
成功的衡量标准不仅仅是利润，还有我们留下的积极影响。
统一自然界所有力的挑战是几十年来推动理论物理学发展的动力之一。
趋势是你的朋友。