21: Highlights

Smalltalk is an object-oriented programming language. Object-oriented programming languages emphasize user-defined classes and class hierarchies.
In Smalltalk, receivers perform computations in response to messages, and return answers. Methods specify exactly how the computations are to be performed.
Smalltalk is popular because it is an object-oriented language from the ground up, because Smalltalk development is done in a powerful development environment, and because Smalltalk facilitates the development of graphical user interfaces.
This book gets you up and running in Smalltalk quickly; it answers your basic questions explicitly; it equips you with program patterns that you can adapt to your own purposes; and it deepens your understanding of the art of good programming practice.