释义：看见一片落叶，就知道一年内的时间将要到头了。通过细微的迹象，可以预料到整个形势的发展趋向与结果。
释义：不要因为坏事小就去做，不要因为好事小就不做。
食品的未来取决于我们平衡生产力与责任的能力。
Your self-worth is determined by you. You don’t have to depend on someone telling you who you are.
The concept of nondeterminism in computation is one of the most important ideas in computer science.
The only real freedom is the freedom to be yourself.