I've learned how much of an impact that music has on people. I get messages all the time from people telling me what my music means to them and what it has done to them.
It's clear that policymakers and economists are going to be interested in the measurement of well-being primarily as it correlates with health; they also want to know whether researchers can validate subjective responses with physiological indices.
True liberty consists only in the power of doing what we ought to will, and in not being constrained to do what we ought not to will.