Structured design does not scale up well for extremely complex systems — Grady Booch

"The entire history of software engineering is that of the rise in levels of abstraction."

"The function of good software is to make the complex appear to be simple."

"In the early days of modern computing - the 40s, 50s and 60s - computing was a priesthood. Only a few were allowed to commune directly with the machine; all others would give their punched card offerings to the anointed, who would in turn genuflect before their card readers and perform their rituals amid the flashing of lights, the clicking of relays, and the whirring of fans and motors. If the offering was well-received, the anointed would call the communicants forward and in solemn silence hand them printed manuscripts, whose signs and symbols would be studied with fevered brow."

"… I pounded the doors at the local IBM sales office until a salesman took pity on me. After we chatted for a while, he handed me a Fortran [manual]. Im sure he gave it to me thinking, "Ill never hear from this kid again." I returned the following week saying, "This is really cool. Ive read the whole thing and have written a small program. Where can I find a computer?" The fellow, to my delight, found me programming time on an IBM 1130 on weekends and late-evening hours. That was my first programming experience, and I must thank that anonymous IBM salesman for launching my career. Thank you, IBM."

"Object-oriented analysis is a method of analysis that examines requirements from the perspective of the classes and objects found in the vocabulary of the problem domain."

"Perhaps the greatest strength of an object-oriented approach to development is that it offers a mechanism that captures a model of the real world."