至今一切社会的历史都是阶级斗争的历史。
我试图以感恩和感激的心态生活,对我所得到的机会心存感激。
法律的合法性取决于其在包括所有公民在内的民主进程中的产生。
Innovation in science often comes from looking at old problems in new ways.
The present state of the system of nature is evidently a resultant of what it was in the preceding moment, and if we conceive of an intelligence which at a given instant comprehends all the relations of the entities of this universe, it could state the respective positions, motions, and general effects of all these entities at any time in the past or future.