Trust: A Very Short Introduction explores key ideas about trust and distrust. Trust is indispensable, yet it can be damaging. Without trusting others, we cannot function in society, or even stay alive for very long, but being overly-trustful can also be a bad strategy. Trust is pragmatic, but it also has a moral dimension: trustworthiness is a virtue, and well-placed trust benefits us all. Why do we value trust? Why do we want to be trusted? Trust is important both in the personal and public spheres, including in family and relationships as well as politics and society.