[folletto]

It's a wonderful quote, because it also says that before coding you might want to learn cognitive psychology, social psychology, gestalt theory, marketing, copywriting, information architecture, usability, economy, statistics, science of materials, architecture and so on and on. :)

There's not just "design" and "code" out there, the design field is way more deep than that, so that quote might translate well to a designer that can't code, but studied in depth social psychology, urban architecture and team cooperation techniques. :)