What prompts this surrender -- this total turning to God in self-donation and makes it possible is the realistic recognition that my very life and being is a gift of love. It is a recognition which becomes experiential in contemplative prayer, in a "knowing" that is beyond knowledge; it is the graced knowledge of love. Only such a gift can make unconditional self-surrender possible, for it is an experience of the unconditional love of a person, a personal God. It is such a recognition that breaks forth joyously in Daniel Berrigan's "All, all is gift. Give it away. Give it away."
Perhaps it seems surprising that physicists seek beauty, but in fact they have no choice. As yet there has not been an exception to the rule that the demonstrable solution to any problem will turn out to be an aesthetic solution.