Smalltalk is not, at it core, like any .computer language.
It has in its essence something more profound.
For those who wish to explore the inspirations that should guide a squeaker here are some references.
(Have patience, I'll add more details as I track them down).
Engelbart's the demo (google has the video)
Alan Kay. (His quest for a dynabook and his early exposure to simula lead to squeak)
So find anything he's written and listen to any of his talks you can get you hands on.
(Squeakland's a good place to start)
The book "What the doormouse said" has a chapter or two on Alan's early programming days.
Alan is connected to the source
Kent Beck
(a small talker who invented XP)
(And test based development tools)
(And a smalltalk pattern language book)
Christopher Alexander !!!
an architect who inspired Kent Beck
he wrote The timeless way of building,
and the first Pattern Languange book
his books are about architecture
they have essential concepts and metahors for squeak development
His four volume set on the Nature of Order is also very useful to developers.
(see his web sites.)
Christopher Alexander is connected to the source and has thought deeply about it.
That's all I can think of at the moment.
Help by adding details and hyperlinks to the things mentiioned here.