让美国再次伟大！
The world is a dangerous place, not because of those who do evil, but because of those who look on and do nothing.
Fear is a natural response, but courage is a choice. Choose to be brave.
当你带着激情做事时，工作就不再是工作了。
Listen to me, my friend. Hope is a dangerous thing. Hope can make people crazy.
The theory of computation is not just about solving problems, but also about understanding the limits of what can be computed.