The true spirit of delight, the exaltation, the sense of being more than Man, which is the touchstone of the highest excellence, is to be found in mathematics as surely as in poetry.

 释义：有才华的人必须要勤于修养，懂得收敛，就好比未经提炼的金玉，虽看起来灰暗无光泽，但日久便会焕发光彩。

实现明天的唯一限制将是我们今天的疑虑。