Best of Most Powerful Women Summit: Day One by Patricia Sellers @FortuneMagazine October 3, 2012, 12:33 PM EDT E-mail Tweet Facebook Google Plus Linkedin Share icons The Fortune Most Powerful Women Summit packed in famous names and exclusive interviews on Tuesday.IBM IBM CEO Ginni Rometty, No. 1 on the 2012 Most Powerful Women list, did her first interview since taking the CEO job in January.Kraft Foods CEO Irene Rosenfeld talked strategy on the day she split her business into two new companies.Former Yahoo YHOO CEO Carol Bartz gave advice to new chief Marissa Mayer on reviving the business.Stay tuned to Postcards and visit this MPW site for highlights, videos and stories from the Summit, which continues today. You can watch the main-stage sessions, starting at 8:45 a.m. PST and listed on the Summit agenda, by registering here. It’s all free.Meantime, here are five of my favorite quotes from yesterday’s MPW Summit sessions:“Never love something so much you can’t let go of it.” - IBM CEO Ginni Rometty on the reinvention that is essential for long-term success“As a woman, I don’t have to tell you that size is not everything.” - Irene Rosenfeld on splitting Kraft and now running Mondalez International MDLZ , a $36 billion-a-year part of the $54 whole.“Sooner rather than perfect” - Xerox XRX CEO Ursula Burns’ sign on her office wall. Here’s a video clip of Leigh Gallagher’s interview with Burns. “Changing culture is not a sprint. It’s a marathon.” - Carol Bartz’s advice to Yahoo CEO Marissa Mayer. Here’s a video clip of me interviewing Bartz.“You have to be awesome with your flaws, the things that aren’t exactly perfect.” - Coca-Cola KO SVP Wendy Clark on building a social media mega-brand, with authenticity.More highlights! Lena Dunham, the star and creator of HBO’s Girls, was charming and funny as she talked about next-gen power and her show’s critics with CNN’s Soledad O’Brien.And my conversation with former Sara Lee CEO HSH Brenda Barnes and her daughter, Erin, touched and brought some tears to the MPW audience. Barnes had a major stroke in 2010, and Erin quit her job to help her mom recover. “The Rehabilitation of Brenda Barnes” is in the current issue of Fortune. Stay tuned here on Postcards for more on a video clip of our conversation at the Summit.