Jack Campbell said this quote

If the people of Old Earth, our ancestors and their descendants today who remain, could keep building, could keep trying, how can we do less? We are their children, and while we bought to the stars with us all the faults and the problems and the flaws of the past, we also bought the good things, the determination, and the willingness to help others, and the imagination to build things greater then every shortcoming humanity has ever known.