外交是实现国家利益的一种手段，但也要尊重和平、公正和法治的原则。

Nowadays, particularly in the United States, if you meet someone at the bottom of society, they may unkindly be described as a "loser." There's a real difference between an unfortunate and a loser, and that shows 400 years of evolution in society and our belief in who is responsible for our lives. It's no longer the gods, it's us. We're in the driving seat.

逻辑学的研究是关于正确推理原则的研究。