From Nikola Tesla (1856–1943), Serbian-American inventor, electrical engineer, mechanical engineer, physicist, and futurist, best known for his contributions to the design of the modern alternating current (AC) electricity supply system:
I do not think there is any thrill that can go through the human heart like that felt by the inventor as he sees some creation of the brain unfolding to success . . . Such emotions make a man forget food, sleep, friends, love, everything.