大多数人发现他们从未后悔的事情只是他们的错误,但发现时已经太晚了。
Better never means better for everyone... It always means worse, for some.
Invention is not enough. Tesla invented the electric power we use, but he struggled to get it out to people. You have to combine both things: invention and innovation focus, plus the company that can commercialize things and get them to people.
The best way to learn mathematics is to do mathematics.