A collection of letters written by Albert Einstein is set to go to auction next week, offering a new glimpse at the Nobel-winning physicist’s views on God, McCarthyism and what was then the newly established state of Israel. The five original letters, dated 1951 to 1954 and signed by Einstein, reveal a witty and sensitive side of the esteemed scientist. They were sent to quantum physicist David Bohm, a colleague who fled the United States for Brazil in 1951 after refusing to testify about his links to the Communist Party to the House Un-American Activities Committee. Bohm’s widow’s estate put the documents on the block after she passed away last year. One of the yellowing pages, bearing Einstein’s signature and embossed seal, and a handwritten general relativity equation, opens at $8,000 and is expected to sell for at least twice that. In all, the collection is expected to fetch over $20,000.