ERICH GAMMA

 
The best designers will use many design patterns that dovetail and intertwine to produce a greater whole.
- Erich Gamma - Gamma, Helm, Johnson, Vlissides, Design Patterns by Erich Gamma, Richard Helm, Ralph Johnson, John Vlissides , ISBN: 0201633612
encapsulate the concept that varies
- Erich Gamma - Gamma et al Design Patterns