In a recent discussion with friends, the subject of the Quaker thee came up. We traced its linguistic development and speculated on why Quakers clung to the second person familiar while others replaced it with the second person formal and plural. More mysterious was the Quaker clinging to the objective "thee" instead of the nominative "thou" and the practice of conjugating "thee" as if it were third person singular (i.e. "thee does" instead of "thou dost").
I have long regretted the loss of the tender and personal "thou" in English speech. I am now regretting the loss of the religious and personal "thee" in Quaker speech. "Thou" served to set apart speech with an intimate from impersonal or commercial speech. "Thee," it seems to me, is a direct appeal from that of God in me to that of God in thee.
I am wondering about introducing "thee" into my own speech with Friends. For me, it would function as a reminder to speak from the heart and the Spirit, a reminder that Friends are connected at a deep and personal level.