If one only wished to be happy, this could be easily accomplished; but we wish to be happier than other people, and this is always difficult, for we believe others to be happier than they are.

翻译：事物发展到了极点，就要发生变化，发生变化，才会使事物的发展不受阻塞，事物才能不断的发展。

The artist must be a prophet of the possible.

发明是不够的。尼古拉·特斯拉发现电力，但是他却纠结于是否将它空开给人们使用。你不得不将这两件事整合：发明和创新，再加上公司愿意将其商业化给人们使用。