Nikola Tesla, the Serbian inventor, one of the fathers of the radio, was never as well known as some of his contemporaries and died before his genius and even fame became well known. I saw a quote by him recently and started to dig a little deeper.
For starters here is a quote from Albert Einstein:

He lived the last years of his life in New York City in obscurity and had a small office where he experimented on 28th Street. It is now known as the Radio Wave Building. He died while living at the old New Yorker Hotel on 34th Street. The hotel is still there and owned by the Moonies!

Here is just one of his quotes:”The scientists of today think deeply instead of clearly. One must be sane to think clearly, but one can think deeply and be quite insane.”