It is a strange fact, characteristic of the incomplete state of our present knowledge, that totally opposing views are held on the nature of the forces which have shaped the face of the Earth.
一个奇怪的事实是，关于塑造地球表面的力量的性质，人们持有完全相反的观点，这反映了我们目前知识的不完整状态。
我们要不断学习，才能跟上时代的步伐。
The division of labor in manufacturing is the great principle by which we gain advantage over other nations.
愛とは、相手のすべてを受け入れることだ。