Sure but if as it is said "the Tao that can be told is not the eternal Tao", then that in itself makes the eternal Tao something that can be told.
This is similar to the the phrase used in Chaos Magick which says that "nothing is true, everything is permitted". If it is true that nothing is true, then the first the first statement is null, but if it is not true and indeed nothing is true then it is not true that everything is permitted, so the second part is null.
This is similar to the the phrase used in Chaos Magick which says that "nothing is true, everything is permitted". If it is true that nothing is true, then the first the first statement is null, but if it is not true and indeed nothing is true then it is not true that everything is permitted, so the second part is null.