数学的美在于它是永恒的,它不会改变。
君子学习贵在能够专一,专一便能够明达,明达之后便能够有所收获。
歌剧是一种生活方式,并非与之分离的事物。
Liberty means responsibility. That is why most men dread it.
The universe is not only stranger than we imagine, it is stranger than we can imagine.