Recently seen quote on Gelman's blog:
“No scientific worker has a fixed level of significance at which from year to year, and in all circumstances, he rejects hypotheses; he rather gives his mind to each particular case in the light of his evidence and his ideas.”
(Ronald A. Fisher, 1956, p. 42)
Also read about mindless statistics here: http://people.umass.edu/~bioep740/yr2009/topics/Gigerenzer-jSoc-Econ-1994.pdf