一场展览应该让观众发生转变。
The most important thing in mathematics is to understand the concepts, not just to memorize formulas.
Efficiency is doing things right; effectiveness is doing the right things.
We are all born mad. Some remain so.
书籍是最安静、最恒久的朋友;它们是最易接近、最睿智的顾问,也是最耐心的老师。
小狗怀疑大宇宙阴谋篡夺它的位置。