可持续性不是一种选择,而是我们对后代的责任。
Innovation is not about saying yes to everything. It's about saying no to all but the most crucial features.
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。
学习数学的最好方法就是做数学。