The most important single central fact about a free market is that no exchange takes place unless both parties benefit.
λ演算是一种表示函数及其应用的形式体系。
To safeguard national independence, we must strengthen national unity.
男性和女性在繁殖策略上有所不同,因为他们在整个进化历史中面临着不同的适应性问题。
你再也回不了家了。
The biggest risk is not taking any risk. In a world that’s changing quickly, the only strategy that is guaranteed to fail is not taking risks.