Regarding Leó Szilárd, a theoretical physicist who first conceived of the possibilities of nuclear chain reactions, nuclear power, and nuclear weapons:
The bath was down the hall. “I remember that I went into my bath…around nine o’clock in the morning. There is no place as good to think as a bathtub. I would just soak there and think, and around twelve o’clock the maid would knock and say, ‘Are you all right, sir?’ Then I usually got out and made a few notes, dictated a few memoranda.”
— Richard Rhodes, Making of the Atomic Bomb
Shower thoughts, bath thoughts, lawn mowing thoughts. Great minds think alike, i.e., in similar repose.