The most fundamental problem in software development is complexity. There is only one basic way of dealing with complexity: divide and conquer
Bjarne StroustrupSome software is actually pretty good, by any standard. Think of the Mars Rovers, Google, and the Human Genome Project. Now, that's quality software!
Bjarne StroustrupDefining OO as based on the use of class hierarchies and virtual functions is also practical in that it provides some guidance as to where OO is likely to be successful.
Bjarne Stroustrup