We can scarcely avoid the inference that light consists in the transverse undulations of the same medium which is the cause of electric and magnetic phenomena.
我们几乎无法避免这样的推论：光是由同一种介质的横向波动组成的，这种介质也是电和磁现象的原因。
Less weight means less waste.
The young do not know enough to be prudent, and therefore they attempt the impossible – and achieve it, generation after generation.
未来属于那些今天为之准备的人。