Jack Quarles: Founder of Buying Excellence and Author of "Expensive Sentences" Jack is the author of Amazon #1 bestsellers How Smart Companies Save Money and Same Side Selling (co-written with Ian Altman). He speaks to business and leadership groups throughout the US and internationally, and as an expense management professional has saved companies tens of millions of dollars. Jack has co-founded multiple startups and currently serves on two boards of directors. He received degrees from Yale University and Northwestern’s Kellogg School of Business. He lives in Toledo, Ohio where he enjoys his church, iced tea, guitar, basketball, and above all spending time with his wife and two daughters.