Dijkstra be damned, I think BASIC is perfect for a beginner because it has such a readable syntax that it really doesn't take long to learn it. Not only is it simple, it's regular, readable and relatively quirk-free. For a beginner with only a small amount of skill, it's easy to look at BASIC code and work out what it does.
Scheme has a simple syntax too, but with it comes much more complicated constructs like closures, scopes, etc. But still, simplicity, immediacy, predictability and regularity are what a beginner needs, and Scheme has that.
Compare them to, say, Javascript, which looks deceptively simple but has so many quirks that we regularly get articles explaining explaining the syntax (such as "this") on HN. I can't imagine diving in to Javscript as a complete beginner.
Scheme has a simple syntax too, but with it comes much more complicated constructs like closures, scopes, etc. But still, simplicity, immediacy, predictability and regularity are what a beginner needs, and Scheme has that.
Compare them to, say, Javascript, which looks deceptively simple but has so many quirks that we regularly get articles explaining explaining the syntax (such as "this") on HN. I can't imagine diving in to Javscript as a complete beginner.