On Amazon (link not provided), "Wisdom for the Soul: Five Millennia of Prescriptions for Spiritual Healing by Larry Chang" is listed with the date April 28, 2006, which I assume to be the publication date. Goodreads agrees with this publication date. The 2006 date agrees with the copyright of the book (Google Books link). Thus, I will assume the book was not published before January 1, 2006.
The earliest version of the quote I could find online was in Wikiquotes, appearing on October 27, 2005. It appeared under the category "Attributed" and not "Sourced," so it probably wasn't extant earlier. I could not find any older versions of the quote even after hours of searching. The next oldest confirmed version was on October 17, 2007 here and then in April 18, 2008 here.
A problem with this methodology is that InternetArchive isn't archiving much random webpages from earlier, so I cannot confirm when the quote first popped up at earlier times.
This appears to be one of the times where Wikipedia contains a random fact, an (untrustworthy) book uses it, and Wikipedia gets to cite it. This is an example of fabricated facts on Wikipedia getting published in books (and in this case, even a book published by the University of Chicago). The book states it hence
This kind of feedback loop—wherein an error that appears on Wikipedia then trickles to sources that Wikipedia considers authoritative, which are in turn used as evidence for the original falsehood—is a documented phenomenon.
As the Wikiquote quote appeared before the book, the book likely copied Wikiquote and Wikiquote cited it. This removes all credibility the book has. The lack of similar versions of the quote (online and in print) also makes the attribution unlikely. Where there should be evidence, there isn't.
Did Jonas Salk say “I have had dreams and I have had nightmares”, etc.?
Jonas Salk likely did not make a similar statement. The claim is dubious.