My dream woman?
Intelligent.
She would have intelligence, and not be ashamed of it. Plusses for being comfortable with maths, science, technology, computers, etc. Not that she has to make them the centre of her life or anything, just not be afraid of them.
Creative.
She would have her own voice, do her own art, have her own style.
Independent.
She would not be blindly following someone else’s line. This includes everything from religion to fashion. Conscious chioce is good.
Empathetic and socially skilled.
You know, all that stuff I have difficulty with.
Single.
At my age, that’s an important qualifier. 
Non-smoker.
Almost the only non-negotiable thing. If you’re a woman, smoking is the quickest way to cause me to lose interest in you.
Multilingual.
A nice extra. Knowing or being interested in Esperanto would be even nicer.
Also: a sense of humour, no whack-job craziness, etc. You know.
After this, the usual list of desired physical attributes seems lame. They are still important, but I have learned that I can meet someone who would seem to be ideal, and there’s no ‘click’, and sometimes the most unixpected person can Be Of Great Interest. Still, I’ll add that I like busty curvy women with a few extra kilos… although that is far from exclusive.