不要盲目追逐梦想
目的赋予心理活动意义。
译文:听别人说不如亲眼看看,远远观望不如凑近细查。
地质时间不仅漫长,而且其事件的发生是不规则的。
The spirit of science is the spirit of seeking truth and being pragmatic.
States are rational actors that seek to maximize their power and security in an anarchic international system.