אֲדֹנָ֖י עֲלֵיהֶ֣ם יִֽחְי֑וּ וּלְכָל־בָּהֶן֙ חַיֵּ֣י רוּחִ֔י וְתַחֲלִימֵ֖נִי וְהַחֲיֵֽנִי׃
Herr, schütze [meine Gebeine], dass sie gesunden, und auch meinen Geist, und stärke mich!
Shulchan Arukh, Even HaEzer
One who is occasionally SICK (meaning, healthy, as in "and you have healed me and enlivened me" in Isaiah 38:16)), and occasionally foolish when SICK, he is considered sharp-sighted for all his words. And if under this condition he expels his wife, that expulsion is considered a valid divorce. Even if he is SICK unknowingly, and not completely sane. See above mark 119 verse 6.