Introduction to the symposium issue on money and liquidity.

This Symposium on Money and Liquidity follows a conference held in Santa Barbara in August 2014, under the sponsorship of the Laboratory for Aggregate Economics and Finance at UCSB. The conference was a celebration of the twenty-fifth anniversary of the publication of Kiyotaki and Wright's On Money as a Medium of Exchange. This Symposium contains a selection of the papers presented at the conference and a selection of regular submissions that fit the theme. All papers were peer-reviewed according to the usual JET procedures.