The Categorical Imperative is supposed to provide a way for us to evaluate moral actions and to make moral judgments. It is not a command to perform specific actions -- it does not say, follow the 10 commandments, or respect your elders.
A blurb on a book can be any combination of quotes from the work, the author, the publisher, reviewers or fans, a summary of the plot, a biography of the author or simply claims about the importance of the work.
The sole purpose of the blurb is to pique the readerâs interest so they feel as if they must read this book. It should hint at the plot, without giving anything away. Words are what matter in a blurb, powerful words that invoke images and resonate with readers.