大国总是在寻找机会以牺牲对手为代价来获得权力，这使得它们天生具有侵略性。

For attractive lips, speak words of kindness.

I never write Metropolis for seven cents because I can get the same price for city. I never write policeman because I can get the same money for cop.

指某些秘密或天意不能随意透露。