Griffin's statement, Huntsville Times

"Today we have in orbit a $75 billion International Space Station, a product of the treasure and effort of 15 nations, and the president is recommending that we hold its future utility and, indeed, its very existence hostage to fortune, hostage to the hope that presently nonexistent commercial spaceflight capability can be brought into being in a timely way, following the retirement of the Space Shuttle."

Mike Griffin Reveals His Commercialization Vision for NASA: Part 1 (2005)

"So it is a real dilemma - it is a real dichotomy: how do we engage competition and position ourselves to take advantage of the successes and accept the failures which inevitable occur in that environment while, at the same time, meeting the goals and objectives that we have as managers? What I've come to, after considerable thinking (with some discussion and modifications to come) - for NASA: the best way to do that is to utilize the market that is offered by the International Space Station and its requirements to supply crew and cargo as the years unfold."