If one foot is in a bucket of steam, and the other is in a bucket of ice, you are not, on average, comfortable.

Excellence is the asymptotic state that never quite reaches perfection.

The Common Curriculum can easily become the karaoke curriculum, where everyone just follows the bouncing ball of the script.

Improvement is about doing something better; innovation is about doing something new.

One or two bad teachers is a problem with the teachers. A school with many bad teachers is a problem of leadership.

It's time for the US to widen its circle of learning, not to circle its wagons against hostile ideas in education reform.

The most important emotion in classrooms is surprise.