Values help to show what should be researched, rather than preventing researchers from being rigorous in their research. By being honest and open about their values, actively disclosing them as part of their publications, they enable readers to take this 'qualified objectivity' into account in evaluating findings.
Courage is a virtue seems like the answer, but I haven’t read the book. Though, I’m making an education guess because it takes courage to go to the moon.
