When he's fretting about something, "he eats less, sleeps poorly, and just sits around the house after work," according to his wife.
他煩惱的時候，照許太太劉寶秀的形容是「飯量減少、覺睡不穩，下班回家常常呆呆地坐著」。這種情形延續最久的一次，是民國四十年他做「水銀整流器」時，長達一個半月。