|"Doubt everything. Find your own light" or "Question everything, and be a lamp" - the Buddha (stratoz/flickr.com)|
There is no need for new teachers for one following the Teaching (Dharma). But teachers of the Teaching are needed. We have to do it, too. It was this way even at the time of the Buddha.
So we take the Dharma as our guide, our teacher, and thereby we become lamps unto ourselves on a quest for truth and complete freedom.