In a paper on which I'm working, I needed a block quotation, within which there were hanging paragraphs — for each every line except for the first was indented — effected in a way that naturally complemented ordinary block quotations as defined in article.cls. Not being a master of LAΤΕΧ, I made a search for how to do this, but I did not find anything that quite did the job. I arrived at this

\newenvironment{hangquotation}
    {\list{}{%
        \setlength{\itemindent}{-1.5em}%
        \setlength{\listparindent}{\itemindent}%
        \setlength{\rightmargin}{\leftmargin}%
        \addtolength{\leftmargin}{1.5em}%
        \setlength{\parsep}{\z@ \@plus\p@}%
    }%
    \item\relax}
    {\endlist}

which I am posting for the benefit of someone which the same problem, or with a problem sufficiently similar that my solution is readily adapted to his or to hers.

Here's an example of the output:

To use the code, place it in the LAΤΕΧ preamble, and then nest each block of paragraphs for which it is to be used between \begin{hangquotation} and \end{hangquotation}.

I don't know whether Robert Francis Kennedy was engaged in plagiarism or allusion when he said

Some men look at things the way they are and ask Why? I dream of things that are not and ask Why not?

It was the former if he expected the audience to take the words as his own, and the latter if he expected the audience to recognize this as an echo of George Bernard Shaw:

You see things; and you say, Why? But I dream things that never were; and I say, Why not?

In any case, when Lionel Beehner said

It seems today's thinkers, to paraphrase Robert Kennedy, like to imagine a world that wasn't and ask, why not?

he was engaged in ignorance.