Susan Cain graduated from Princeton University and Harvard Law School. She worked as a corporate lawyer before deciding to write Quiet and devote herself to the cause of empowering introverts. She is also the author of the children's book Quiet Power: The Secret Strengths of Introverts.
Grant Snider's comics and illustrations have appeared in the New York Times, Best American Comics 2013, and on his website Incidental Comics. He illustrated Quiet Power: The Secret Strengths of Introverts.