亲代投资是理解两性交配策略差异的关键。

The United States is experiencing a crisis of political decay, with institutions that are increasingly dysfunctional and unable to address the country's challenges.

For beautiful eyes, look for the good in others; for beautiful lips, speak only words of kindness; and for poise, walk with the knowledge that you are never alone.

所有生而为人的人都需要教育，因为他们注定要成为真正的人，而不是野兽、迟钝的动物或木头块。