On assessment: measure what you value instead of valuing only what you can measure.
One or two bad teachers is a problem with the teachers. A school with many bad teachers is a problem of leadership.
We learn more from people who are different from us than ones who are the same.
Don't raise the bar and narrow the gap, but narrow the gap to raise the bar.
It is those who have the distinction of privilege who set the standards of disgust with failure.
Sustainable leadership does not compromise the future by expanding and accelerating too quickly in the present.