Be alone, that is the secret of invention; be alone, that is when ideas are born.
Bonus trivia: Tesla is the reason behind the term “death ray”. He claimed to have invented a charged particle beam that could use directed energy to destroy any vehicle that an enemy might use for invasions. The press called it a “death ray”, with no small amount of skeptical disdain. He also inspired science fiction by coming up with an idea for an ion-propelled aircraft that did not require wings or fuel or wheels, conceiving it to be saucer-shaped.