I want to liberate America from fear. I want people to be afraid of the things that are really scary, like war and famine, not their neighbor because he has a different religion.
自由并不意味着摆脱某物,而是能够自由地去做某事。
In business, as in life, integrity is the only currency that never loses value.
在量子力学中,观察者不是客观的,而是系统的一部分。