To teach mathematics is to inspire the next generation of thinkers and problem solvers.
领导力不是掌控，而是照顾那些你负责的人。
The end of all our exploring will be to arrive where we started and know the place for the first time.
地球上生命的未来取决于我们采取行动的能力。许多人正在尽其所能，但只有我们的社会、经济和政治发生变化，才能取得真正的成功。
It's not just the ad, but the product that must be interesting.
科学的进步在于每一步发现一种新的秩序，这种秩序将看似不同的事物统一起来。