I would happily fill this space with a tribute to the late Theodore Sizer, but a colleague has written one that cannot be surpassed insofar as it says all the things that I think most need saying about our fallen comrade and leader. So check out "Losing Another Lion" by Jonathan Martin. The rest of the 21K12 blog is pretty great, as well.
What I will say about Ted Sizer is that his work on school reform came along just as many of us seemed to be ready to enter into a comfortable if perhaps a little lackluster academic middle age. The Horace books shook us up, and the Coalition gave us a set of ideals to which we might aspire. Later writing, such as The Students Are Watching and The Red Pencil, inspired even the least reflective among us to ponder our work deeply and powerfully. Along the way we discovered the complementary genius of Nancy Faust Sizer, Ted's estimable spouse and collaborator.
We will miss Ted Sizer, but thankfully his legacy will live on for generations of schoolchildren yet unborn.