Paulo Freire continually asked, “What is to know?” I want to add another open question: How do you know you are right on, doing what folks truly need for their learning and yours? This week I realized: Joy is the measure. I feel and realize deep joy in learning and teaching – seeing groups of adults awakening, challenging one another, arguing an issue, sharing very diverse perspectives. When this happens, my heart leaps with joy. And indeed, I know. We do not believe in the principles and practices of Dialogue Education: we test them daily in our life and work. We are scientists, on the cutting edge of a quantum leap of educational research and practice. How do we know? I propose: Joy is the measure.