"There may be people within the Brotherhood who are involved in terrorism and violence. There were also those who expressed this opinion in Europe and America. If there is such involvement in terrorism, this can never be approved. Our basic approach, which has not changed since day one, against all kinds of terrorist movements has been: “A true Muslim cannot be a terrorist. "And a terrorist can never be a true Muslim." Therefore, Islamic groups must take a clear stance against terrorism and violence and take a firm stance. Otherwise, the face of Islam will be darkened and the religion will be betrayed."
January 1, 1970
https://en.wikiquote.org/wiki/Fethullah_G%C3%BClen