"Madame Fadeeff: "...my niece spoke to me about them (the Masters of Wisdom), and that very fully, years ago. She wrote to me that she had seen and reknitted her connection with several of them before she wrote her Isis. Why should she have invented these personages? With what object ? and what good could they do her if they did not exist? Your enemies are neither wicked nor dishonest, I think; they are, if they accuse you of that, only idiotic."
January 1, 1970
https://en.wikiquote.org/wiki/Masters_of_Wisdom_(Theosophy)