Actor and musician Johnny Flynn was in tune with Albert Einstein long before he played the famed physicist in National Geographic’s anthology series “Genius.”

Not only do they both share the same birthday: March 14, but Flynn had previously written a song titled ‘Einstein’s Idea,” which he performed with his band. Talk about synchronicity – a word that Flynn actually uses to describe the cosmic connection and harmony he felt with his subject.

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“Despite not knowing anything about him, I’ve had this mystical impression of Einstein,” Flynn said. We know him as a scientist, but somehow I caught this idea that he was like a wise man in the tradition of mystical cosmic sages.

“The thing that marks him out in terms of his theories,...