Integrating everything together into a complete operating environment was Smalltalk's (and Squeak's) greatest strength and greatest weakness. It's possible to

Integrating everything together into a complete operating environment was Smalltalk's (and Squeak's) greatest strength and greatest weakness. It's possible to extract the language from the environment but then you end up with something that isn't nearly as amazing. Something similar can probably be said for Oberon and for Lisp machines as well.