You speak into it and everything is recorded, voice, tone, intonation, everything. You turn a little wheel, and forth it comes, and can be repeated ten thousand times. Only fancy what this suggests.
My friends all regarded me as a man of unsound mind because I held the view that my wife was with me in spirit always. I have lived with her spirit guiding me every day and she is with me now as I write this letter, and helps me to do as I am now doing.