Sourced

• Yes, the investor is often his own worst enemy. Yes, the marketing colossus known as the mutual fund industry provides the weaponry which enables investors’ to indulge their suicidal instincts. No, the fund industry was hardly an innocent bystander in the market boom and the subsequent carnage. "We have met the enemy and he is us"... all of us.
  • Speech to Financial Analysts of Philadelphia, February 15, 2001 (http://www.vanguard.com/bogle_site/sp20010215.html)

• The principal role of the mutual fund is to serve its investors.
  • Princeton thesis, 1951 (http://www.vanguard.com/bogle_site/sp20051015.htm)

• The courage to press on regardless—regardless of whether we face calm seas or rough seas, and especially when the market storms howl around us—is the quintessential attribute of the successful investor.
  • Speech at the Trinity University Policymaker Breakfast Series, April 16, 2001 (http://www.vanguard.com/bogle_site/sp20010416.html)