The quote was taken from
The Humble Programmer (ACM Turing Lecture 1972).
I found it amusing because he seemed to be describing Perl golf
sixteen years before Perl was invented. :-)
Though Dijkstra didn't explicitly name the language in question,
I assume he was referring to APL.
As indicated in this
vent against almost every programming language of the day,
Dijkstra wasn't too fond of APL, describing it as
"a mistake, carried through to perfection".
I don't know what he thought of Perl nor am I aware of any Dijkstra Perl quotes.