With his exit from late-night TV, “Daily Show” host Jon Stewart will surely leave a void in the comedy-sphere. Many would rather he not leave, but we’ve put our trust with him for so many years: If he believes it’s his time to go, then we should trust him on that as well.

Author Lisa Rogak’s incredibly in-depth biography on Stewart, Angry Optimist: The Life and Times of Jon Stewart, reveals a plethora of information that few would know about the comedian. Stewart is not a very public guy. According to those who worked alongside him, despite his charming onscreen persona, he doesn’t tend to open up to coworkers easily. He’s a tough nut to crack.

But here are a few things about Jon Stewart that you likely didn’t know.

Angry Optimist is out now in hardcover and paperback through St. Martin’s Press.

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