A couple of days later, Stephen would emerge from his isolation. With a triumphant smile, he would announce that he had solved yet another major problem in physics. It was only after the event that these episodes became a joke. As each new situation was marginally different from the previous one, I never learnt to recognize the symptoms. At the time I always worried that Stephen might really be feeling unwell. Each time I would compliment him on his success, but secretly I realized that the children and I had joined battle with that irresistible goddess, first encountered in America in 1965, the goddess of Physics, who deprived children of their fathers and wives of their husbands. After all, I remembered that Mrs Einstein had cited Physics as the third party in her divorce proceedings.
— Travelling to Infinity (Jane Hawking), Loc. 2798–804