And he was right.
That day I dropped out of my Electrical Engineering major. I figured that if the supposedly brightest minds in our department were a) so utterly ignorant b) so obnoxiously arrogant and c) whose imaginative capacities were dwarfed by common ants, that I had nothing to learn from them.
Yes, you were smarter as a freshman than the sum of all the professors in your college. At least you and Tesla had something in common.
He had patents on things that couldn't see use for 50+ years. He worked on things to commercially unviable that he died a pauper with no one willing to fund anything he did. The only lasting contribution is a crap character to insert in movies like The Prestige and alternating current (though use of AC predated Tesla, his improvement of the application of it catapulted it ahead). All the rest is myth and failed (either scientifically or commercially) experiments.
When the world is united under one socialist government (like, say, the Federation from Star Trek) then we'll dust off his wireless power distribution where no one can ever be metered and it's available everywhere. It works great, but it costs to make it work, and you can't tell who's using it, so it has to be done pretty much at a global socialized scale. And despite the ravings of the Tesla nutjobs, it's well understood tech that just hasn't had a lot of research because it's so obviously uncommercial.
That Tesla put his curiosity above the ability to put food on his plate is what the nutters cling to showing his greatness. Everyone else on the planet points to it as the reason he became irrelevant.