Albert Einstein typically threw out drafts of his paradigm-shifting work.

But thanks to the Nobel Prize-winning scientist’s friend and collaborator, a rare, working manuscript “almost miraculously” survived to the present – and it’s expected to fetch millions at an auction in Paris on Tuesday, according to Christie’s, which is holding the sale for the Aguttes auction house.

The 54-page document, handwritten jointly by Einstein and Swiss engineer Michele Besso – his lifelong friend and only acknowledged collaborator – documents preparatory work for Einstein’s general theory of relativity, an idea that changed human understandings of the universe and has been described as the most beautiful theory in physics.

“As one of only two surviving manuscripts documenting the genesis of general relativity, it provides a remarkable insight into Einstein’s work and a fascinating glimpse into the mind of the greatest scientist of the 20th century,” Christie’s said on its website.... Read More: Washington Post