The future of global politics will be shaped by the competition between democratic and authoritarian systems.
The best preparation for tomorrow is doing your best today.
记忆是复杂的东西,是真相的亲戚,但不是它的双胞胎。
当你解决一个数学问题时,你不仅得到了答案,还理解了为什么这是答案。
It's easier to ask forgiveness than it is to get permission.
生命的价值不在于寿命的长短,而在于我们如何利用它。
决定我们是否富有的,不是我们拥有的东西,而是我们没有也行的东西。