"I believe in the power of books to change lives."
成人必须了解,儿童需要运用双手,并认同儿童第一次运用双手时,只是工作本能的展现。
解决数学问题的喜悦是无与伦比的;这是纯粹的智力胜利的时刻。
A mathematician is a device for turning coffee into theorems.
Technology alone won’t save our oceans; it takes a commitment to ethics and ecology.