The Jewish mystics use the name Ayn Sof when speaking of God the Creator. Literally it means "no thing." And the point is that any word a person would use to describe God reduces his own concept of God to the word that he used.
Logic for instance is part of the creation, not a property of the Creator.
Thanks for the enlightenment about the Jewish mystics. That, I suppose, is why we occasionally see G_d in these discussions.