I didn’t know Aaron well, but I admired him deeply. The remembrances at Remember Aaron Swartz give a picture of just how much he meant to so many people.
These photos are from the last time I saw him, at a small wiki meetup in Boston in 2009. In my favorite, he’s huddled around a screen with SJ and Mako, and they’re all geeking out over these videos of procedurally generated educational games and and books that are written with Word macros. His passion was infectious and beautiful.