1. If we admit defeat too easily, we may not realize that we are very close to being right. Carl Pope II. The same is true of "difficult". Facing the cliffs, you can't see a crack in a hundred years, but you can advance inch by inch with an axe, and you must advance inch by inch. Keep accumulating, leap will come, and breakthrough will come. -Hua (China)

I really want to invent a kind of mass or machine with such terrible mass destruction that war will never be possible. Nobel Prize (Sweden)