I've noticed lately that quite a few people and organisations are advocating the benefits of combining psychotherapy and Buddhist meditation practices. I've also heard from a couple of people (not that I've conducted an unbiased statistical analysis), that once they started sitting zazen regularly, their dreams became much more vivid (or they just remembered them more often).

I realise that psychotherapy has changed quite a bit from its Interpretation of Dreams stage, but people still seem pretty interested in analysing dreams and other products of the unconscious mind.

So I was wondering if anyone knows what position, if any, Dogen Zenji or the other patriarchs had on the importance of dreams, and analysing the symbols and artifacts of the dreaming mind.

This is just a casual question by the way, I haven't had any particularly interesting dreams lately.