There's no substitute for being invested with skin in the game in the world at large. In this weekend conversation, Co-founders of The Motley Fool Tom and David Gardner explain why. In this discussion the Gardners cover: - How investing fits into the pursuit of becoming smarter, happier, richer - The importance of being a lifelong learner and investor - Using index funds and how to approach buying individual stocks - Two core Motley Fool approaches -- Rule Breaker and Everlasting investing philosophies - Setting the right expectations for returns - Mastering the mindset of investing and managing volatility If you aren't already a listener, check out David Gardner's Rule Breaker Investing podcast at RBI.Fool.com And you can follow Tom and David on Twitter @TomGardnerFool and @davidgfool.