A handwritten letter in Italian by Albert Einstein was the lead lot at RR Auction on February 19 with a final bid of $75,000.
It dates to 1925 and is addressed to engineer Giovanni Giorgi. Einstein expounds on his theory of relativity and his thoughts on God.
He writes: "I agree with your opinion on the fact that the movement of an ether with a [mathematical expression] so high is particularly impossible. God created the world with more intelligence and elegance. You right to compare with Miller's works, the laws of aberration.
"The theory of Stokes-Planck is very artificial and can not—in my opinion—explain this law of aberration. I would be very curious to know the real cause of the Miller's phenomenon. I do not doubt the validity of the theory of relativity."
The auction house comments: "Each and every sentence contains a revelatory turn and could be expounded upon at length within the context of Einstein's life and work.
"Although he did not believe in a personal deity, Einstein was not averse to speaking of God in a scientific context when discussing differing interpretations of quantum physics."
Another letter, in which Einstein refers to religious faith as "childish" sold for $404,000 in a 2008 auction.
The present sale included a wealth of memorabilia from across history. It included a set of unseen photographs showing the Kennedys on holiday at Cape Cod in August 1961 that sold for $32,500.
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