Mark Stoleson is the CEO of Legatum, an investment firm based in Dubai. Legatum uses proprietary capital to invest in breakout business opportunities. They are focused on improving people’s lives by increasing prosperity across the world. Since their founding, 15 years ago, they’ve launched some remarkable organizations focused on ending modern-day slavery, ending neglected diseases, and giving the most impoverished children access to an excellent education. In this conversation, David and Mark talk about the power of patience, getting to conviction, and leaving a legacy.