Key Google quotes by Google:

Google Corporate Information: Today: "It is a core value for Google that there be no compromising of the integrity of our results. We never manipulate rankings to put our partners higher in our search results. No one can buy better PageRank. Our users trust Google's objectivity and no short-term gain could ever justify breaching that trust."

Google Job Opportunities: "Google's goal is to do important stuff that matters to a lot of people. In pursuit of that goal, we've developed a set of values that drive our work, including one of our most cherished core values: 'Don't be evil.'"