bader ginsburg prove that people can disagree and yet remain friends. jan crawford watched their friendship blossom through the years. >> reporter: we think about justice scalia and justice ginsburg, they were in many ways complete opposites. scalia. administration. and then the soft-spoken ginsburg started her career arguing for women's rights, but they have this deep and affectionate friendship. justice ginsburg has this fabulous picture in her office of the two of them, they're riding an elephant on a trip to opera. they're even dressed in costume in one picture they have, and they would do things with their spouses together, too. they would all spend new year's eve together, have these regular dinners. their friendship goes back to their days serving on the federal appeals court in washington, and it was always wonderful just to hear them talk about their relationship. >> i was listening to him and disagreeing withthhat a good part of what he said, but i thought he said it in an absolutely captivating way. >> i think we should leave it at that. we a