Mike Nudelman/Business InsiderAt the ripe old age of 25, Snapchat CEO Evan Spiegel already has a net worth of $1.5 billion, making him the youngest billionaire in the world, according to Forbes.
When Snapchat first launched, it was primarily seen as a sexting app, an idea re-enforced by a bout of horrendous emails obtained by ValleyWag from Spiegel's college days, which made him look like a sexist jerk.
Today, though, the app is catching the attention of big time advertisers and Spiegel himself has matured as well.
Former Twitter CEO Dick Costolo called him "one of the best product thinkers out there." Here are a few of Spiegel's quotes that prove him to have grown past his frat boy days into a respected executive: