What would you ask an investor who's beaten the market by more than 200% over the past decade-plus and has watched one of his picks turn into a 100-bagger?

That's what the Fool's Matt Koppenheffer had to ponder when preparing to interview Motley Fool co-founder and Supernova lead advisor David Gardner. While David can count his investment in Amazon.com (NASDAQ:AMZN) as a success, as the stock has grown more than 100-fold since his first investment, he has recommended countless other stocks to Motley Fool subscribers that now fetch a multiple of their original price.

In the wide-ranging interview that follows, Matt got David's thoughts on (among other things):

  • Why he prefers investing in companies that other investors think are overvalued.
  • What he's learned from Warren Buffett and what of Buffett's approach he leaves behind.
  • Why Amazon's Jeff Bezos has been able to manage Amazon his way.
  • What he thinks about the opportunity for 3-D printing, Tesla (NASDAQ:TSLA), and Twitter (NYSE:TWTR).

John Mackey, co-CEO of Whole Foods Market, is a member of The Motley Fool's board of directors.

Matt Koppenheffer owns shares of Amazon.com, Apple, Berkshire Hathaway, Wal-Mart Stores, and Zillow. The Motley Fool recommends 3D Systems, Amazon.com, Apple, Berkshire Hathaway, eBay, Facebook, Google, Netflix, priceline.com, Starbucks, Stratasys, Tesla Motors, Tile Shop Holdings, Twitter, Walt Disney, Whole Foods Market, and Zillow and owns shares of 3D Systems, Amazon.com, Apple, Berkshire Hathaway, eBay, Facebook, Google, Netflix, priceline.com, Starbucks, Stratasys, Tesla Motors, Tile Shop Holdings, Walt Disney, Whole Foods Market, and Zillow. Try any of our Foolish newsletter services free for 30 days. We Fools don't all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.