Professor John O'Neill addresses two questions about sustainability: Is it possible to maintain or improve well-being without increasing consumption? Is it possible to extend the time-horizon of individuals and institutions so that the interests of future persons can be better made to count in current choices? The talk contrasts Epicurean and Aristotelian answers to the questions. Professor John O'Neill looks at the philosophical issues around happiness, well being, and sustainability. Festival of Ideas talk recorded Friday 28th October 2011.