The obligation of subjects to the sovereign is understood to last as long, and no longer, than the power lasteth by which he is able to protect them.
That is what learning is. You suddenly understand something you've understood all your life, but in a new way.
可持续性不是一种选择；它是水产养殖唯一的前进道路。
The bond market is the ultimate barometer of market expectations.
Sometimes the simplest melodies are the hardest to write.