I don't think that everyone should become a mathematician, but I do believe that many students don't give mathematics a real chance.

你必须有一个梦想，这样你才能在早上起床。

我无话可说，我正在说它。

Our capacity to draw happiness from aesthetic objects or material goods in fact seems critically dependent on our first satisfying a more important range of emotional or psychological needs, among them the need for understanding, for love, expression and respect.

你必须愿意冒险，因为最大的风险就是不冒任何风险。