Every seed we plant today is a promise to future generations.

生活是10%发生在你身上的事和90%你如何应对它。

每一吨开采的煤炭都应承载我们对未来的承诺

The science of government it is my duty to study, more than all other sciences; the arts of legislation and administration and negotiation ought to take the place of, indeed to exclude, in a manner, all other arts.

数学之美在于它的简洁与深度。