Nikola Tesla and Swami Vivekananda wrote to each other and even met (before Planes, Cars, etc). Swami Vivekananda was a Hindu before Gandhi, who spread Hinduism around the world, started Temples in places like Chicago, and is seen as a Key Figure in many modern Hindu schools of thought.
"All perceptible matter comes from a primary substance, or tenuity beyond conception, filling all space, the Akasha (आकाश) or luminferous ether, which is acted upon by the life giving Prana (प्राण) or creative force, calling into existence, in never-ending cycles all things and phenomena."
-Nikola Tesla