Co-founders Tom and David Gardner look back on The Motley Fool's journey with Amazon.com (AMZN -2.56%) since first purchasing it in September 1997. The brothers discuss the ups and downs they've seen with the stock, now a 100-bagger for the Fool.

Investing in the businesses he loves, not playing the stock market, is the key to David Gardner's approach to investing and his market-beating success -- a success he shares with The Motley Fool through services such as Rule Breakers, Stock Advisor, and more.

A look at America's business legends
Not every CEO can be as successful as Jeff Bezos has been with Amazon. But during the past two years, Motley fool co-founder and CEO Tom Gardner has made it his personal mission sit down with dozens of the world's brightest investors and business minds on behalf of his Motley Fool ONE members -- we're talking true American legends like Whole Foods co-CEO John Mackey, Costco founder Jim Sinegal, and even Vanguard founder Jack Bogle -- as he scours the globe to find the next great company to provide Amazon-esque returns.

On March 20, this "crown jewel" service will reopen to new members for only the third time ever. And to celebrate, Tom would like to offer you a front-row seat to watch these visionaries share the keen insights and unparalleled business acumen that got them to where they are in life.

Even if you aren't an investor, the business lessons you'll take from these conversations are priceless. So please click here to access our Motley Fool ONE member lobby and our entire collection of these interviews absolutely FREE of charge!

Tom Gardner: You're the best investor at our company. What does it feel like, to you, to have a 100-bagger investment in the portfolio, that you know members are buying and talking about? What is motivating you as an investor when you're looking for the companies that you're finding?

David Gardner: Well, this is the last thing I'll say for now. Basically, Tom, for me the purpose of our company is to help the world invest better and what I think about all the time is the people who are buying with us.

You're taking a risk when you buy companies with very high price-earnings ratios or Amazon.com -- all of a sudden Barron's comes out with "Amazon.bomb" on the cover in the year 2000 or so.

But if you stay focused on the businesses -- us as investors, Tom, your service's incredibly accomplished work in great numbers, and across The Motley Fool. Heck, Inside Value was recognized by Hulbert Financial Digest as one of the top three performers in the last five years, so, The Motley Fool has an incredible efflorescence of market-beating services and advice.

I think what unites us all, more than anything, is that we're business-focused. That's the number one thing that I see running right through The Motley Fool. We are essentially MBAs without MBAs. We love business, and we're doing that. We're just becoming part-owners of businesses; we're not playing with stocks.

Tom: A 100-bagger. Amazon.com. What an incredible achievement by you and the team in Rule Breakers, Stock Advisor, Supernova, and all the services you're running. I will just close with this point of emphasis -- although there are five or six or seven different great points here in this conversation.

Amazon, a 100-bagger, it took 16 years. That's just a reminder that that's how you get these multi-bagger, awesome returns. They happen over 5 or 10 or 15 or 16 years, and it can transform your portfolio. Dave, thanks for sitting down and talking a little Amazon, and best of luck finding the next 100-bagger. I can't wait to buy right along with you!

David: Thanks a lot, Tom. That was fun.