Even so, many scientists were visibly upset by the concept of a Big Bang. Robert Jastrow cites a number of examples in his book God and the Astronomers: Astronomer Arthur Eddington called the concept “preposterous … incredible … repugnant.” Physicist Philip Morrison of MIT confessed, “I find it hard to accept the big bang theory. I would like to reject it.” Allan Sandage of Carnegie Laboratories said the idea was “such a strange conclusion” that “it cannot really be true.” Like Einstein, prominent scientists began to advance theories that would eliminate the need for a beginning. They worked very hard tofind a scientifically credible way for the universe to have existed forever.