世间之事,有的可以做,有的不可以做,明知不可为而为之,是愚蠢的行为。
The cosmos is also within us, we're made of star-stuff. We are a way for the cosmos, to know itself.
宇宙也在我们体内,我们都是星尘构成的。我们是宇宙了解其自身的途径。
Exceed your customers' expectations. If you do, they'll come back over and over. Give them what they want — and a little more.
数学思想的真正考验是它能否激发更多的问题。