p 513 - Object-oriented design: With Applications, (1991)
Quote of the day
Every hand and every hour should be devoted to rescue the world from its insanity of guilt, and to assuage the pangs of human hearts with balm and anodyne. To pity distress is but human; to relieve it is Godlike.
![[A class category is] a collection of classes, some of which are visible to other class categories, and others of which are hidden.](https://img.libquotes.com/pic-quotes/v1/grady-booch-quote-lbe9p3w.jpg)
![[A class category is] a collection of classes, some of which are visible to other class categories, and others of which are hidden.](https://img.libquotes.com/pic-quotes/v2/grady-booch-quote-lbe9p3w.jpg)
![[A class category is] a collection of classes, some of which are visible to other class categories, and others of which are hidden.](https://img.libquotes.com/pic-quotes/v3/grady-booch-quote-lbe9p3w.jpg)
![[A class category is] a collection of classes, some of which are visible to other class categories, and others of which are hidden.](https://img.libquotes.com/pic-quotes/v4/grady-booch-quote-lbe9p3w.jpg)
