If you think about the impact Twitter has on the world versus Instagram, it’s pretty significant. It’s at least apples to oranges. Twitter is what we wanted it to be. It’s this realtime information network where everything in the world that happens on Twitter—important stuff breaks on Twitter and world leaders have conversations on Twitter. If that’s happening, I frankly don’t give a shit if Instagram has more people looking at pretty pictures.</p>

- Evan Williams, to Erin Griffith at Fortune