In 2014, Volumes One and Two of the speeches and articles of His Royal Highness The Prince of Wales were archived and published by the University of Wales Press. This third volume of the speeches and articles of The Prince of Wales includes a thematic expansion to the section on 'Climate Change and Sustainability', accommodating a number of texts that address the interconnected relationship between economic, social and environmental sustainability. As The Prince of Wales marks his seventieth birthday, we note a significant achievement. Over the years, in broader terms, his words and actions have received little publicity, but matters on which The Prince has voiced concern have subsequently risen on the agenda for a great many other thoughtful and well-informed observers. It is hoped that among the merits of this archive is its record of The Prince's contribution, which will allow a fair and balanced assessment of his singularly remarkable contribution.