This foreword is described in the book as being "written as an article in 1997". There's a brief introduction (8 paragraphs dated December 2002), and then what follows is purportedly that same article, which begins, "The Web was designed to be a universal space of information[...]". The acknowledgements of the foreword, too, says that it "is based on a talk presented at the W3C meeting, London, December 3, 1997".
The same material, including acknowledgement, but sans the 8-paragraph introduction, is available on a webpage titled "Realising the Full Potential of the Web" on the W3C site. https://www.w3.org/1998/02/Potential.html