每个时代都有其乐趣、机智风格和独特方式。

The roots of education are bitter, but the fruit is sweet.

Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.

Our ideas of what we believe to be， are not of what they are， but only of what they seem to be.

我是一个传奇。我也是有史以来最伟大的运动员。