Creativity will arise from contact, first with self and then another. The spark of creativity is most apparent when two complete people, who have no expectation of the other, meet. If we meet and I do not need you to be anything other than that which you are, then creativity will arise. Be that creative conflict or connectedness. I think this is what Buber meant by the I-thou; though he thought it was god interposing between two people, I suspect this was just to give away responsibility for that moment of creativity to a fictional entity. It is enough to say that when we truly meet there will be creativity, there need be no magical being to enable our contact.