"Goals can be a powerful force for change. But a goal framework is not the best solution to every social, economic and environmental challenge. They are most effective where a clear and compelling ambition can be described in clearly measurable terms. Goals cannot substitute for detailed regulations or multilateral treaties that codify delicately-balanced international bargains. And unlike treaties, goals similar to the MDGs are not binding in international law. They stand or fall as tools of communication, inspiration, policy formulation and resource mobilisation."

"A goal framework that drives transformations is valuable in focusing global efforts, building momentum and developing a sense of global urgency. It can be instrumental in crystallising consensus and defining international norms. It can provide a rallying cry for a global campaign to generate international support, as has been the case with the MDGs."