The security dilemma is a fundamental feature of international politics, as states' efforts to increase their own security often decrease the security of others.
If you don't give up, you still have a chance. Giving up is the greatest failure.
The true value of a forest is measured not just in board feet of timber, but in the lives it sustains and the ecosystems it supports.
挑战在于让不可见的东西变得可见。