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Einstein hadn't been in Germany since he left at the age of 15 to avoid the draft. He renounced his German citizenship the next year.
When Einstein was in Berlin, many to visit colleagues. He was also invited by a cousin.
A first cousin, named Elsa Einstein. They had known each other as kids. But Einstein had lost track of her.
Living on her own, had divorced yet, two daughters.
She is just the opposite of Meliva. She is not a scientist, she's not intellectual, but she loves making bagel, dinners, and taking care of Einstein. They like each other's accompany, taking long walks, looking at the boats, and he must have been fascinated by her.
Einstein returns to Zurich. They exchang fairy love letters. And one point becomes so strong that Einstein says please don't write me any more. This isn't going to work. He must feared that this was an over complex situation, even for Albert Einstein.
If the mystery of the heart eludes Einstein, the mystery of the universe troubled him even more.
The curvature of space and warping of spacetime. And you just, you scratch your head.
He's now been struggling for four years to more fully develope his general theory of relativity.
His theory of relativity is so complicated that very few people can understand it.
Somebody got to test it.
It's not a testable hypothesis. It's not science. It's science fiction.
Einstein knows he is on the right track towards solving his theory. Now he must find a way to prove it.
It's 1911. For 4 frustrating years, Einstein has struggled to perfect his general theory of relativity. His theory won't be accepted until he can demonstrate this radical concept. Suddenly, he is struck by an idea. If he can shine a beam of light through an aera where spaces are curved. Then according to his theory, the beam of light will actually appear to bend.
Light only knows straight lines. What's bent is space.
What could have enough gravity to bend light so much? Well, what about the sun? 
