“When I was 9 years old I built a turbine in a mountain stream on my father’s land and connected it up with bolts to all sorts of machinery. I told my uncle, ‘Some day I’m going to America and I will run a big wheel at Niagara Falls.’ I had read about Niagara Falls and it fascinated me. My uncle didn’t take it seriously. ‘You’ll never see Niagara Falls,’ he told me.“
“But I did come to America, and I did put a big wheel in Niagara Falls.
“Tesla, 76, Reports His Talents At Peak.” New York Times, July 10, 1932.