I don't think you can ever stop learning as an actor.
The future of global politics will be shaped by the competition between democratic and authoritarian systems.
在为增加粮食生产的机构和为控制人口的机构联合起来共同努力之前,抗击饥饿的斗争不可能取得永久性进展。
The psychologist must study the mind as it is, not as it ought to be.