As suggested by the title, this book is composed as a letter to the generation born in 2011-2013, a generation which upon graduation will face the dire consequences of the failures of those now in charge of economic and environmental policies. These policies are based on conservative and neoconservative thought and entail growing public and private debts, erosion of democratic structures, cancellation of generational contracts (education, health insurance, pensions), and environmental degradation. All these issues, and some others, are addressed in the book.