I think that Nikola Tesla is the no.1 scientist ever for this 5 reasons.
1. He's the one who invented ac motor that run the world.
2. He invented wireless communication.
3. He knows how to transmit electric power wirelessly.
4. He only think about what he can give to humanity.
5. He's a virgin until the day he died.
What do you think?
He also believed in eugenics lol. I think he was a great inventor but he often gets more credit then the shoulders he stands upon, for instance NO ONE has really ever heard of Ruđer Boković, or Swami Vivekananda, who are primary influences for Tesla.