When he got frustrated, Bohr sometimes would simply sputter the same word over and over. Soon he was doing so with Einstein’s name. He walked to the window and kept muttering, over and over, “Einstein… Einstein…” At one such moment, Einstein softly opened the door, tiptoed in, and signaled to Pais not to say anything. He had come to steal a bit of tobacco, which his doctor had ordered him not to buy. Bohr kept muttering, finally spurting out one last loud “Einstein” and then turning around to find himself staring at the cause of his anxieties. “It is an understatement to say that for a moment
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