To succeed， get other people to pay you； to become wealthy， help other people to succeed.

The anarchic nature of the international system compels states to prioritize their own survival above all else.

"What good is the warmth of summer, without the cold of winter to give it sweetness."

"What's terrible is to pretend that the second-rate is first-rate. To pretend that you don't need love when you do; or you like your work when you know quite well you're capable of better."

研究的坚持是关键；自然只向有耐心的人揭示它的秘密。