对抗病毒是一场持续的战斗，科学必须始终领先一步。
The fight against viruses is a continuous battle, and science must always stay ahead.
The profession of book writing makes horse racing seem like a solid, stable business.
The most successful people are those who are good at plan B.
The statesman， who should attempt to direct private people in what manner they ought to employ their capitals， would not only load himself with a most unnecessary attention but assume an authority which could safely be trusted， not only to no single person， but to no council or senate whatever， and which would nowhere be so dangerous as in the hands of a man who had folly and presumption enough to fancy himself fit to exercise it.