Software development is technical activity conducted by human beings.

Software gets slower faster than hardware gets faster. (Or, sometimes known by] Grove [the head of Intel] giveth and Gates [the head of Microsoft] taketh away.)

In the practical world of computing, it is rather uncommon that a program, once it performs correctly and satisfactorily, remains unchanged forever.

Our ultimate goal is extensible programming. By this, we mean the construction of hierarchies of modules, each module adding new functionality to the system.

Time pressure gradually corrupts an engineer's standard of quality and perfection. It has a detrimental effect on people as well as products

A good designer must rely on experience, on precise, logic thinking; and on pedantic exactness. No magic will do.

Many people tend to look at programming styles and languages like religions: if you belong to one, you cannot belong to others. But this analogy is another fallacy.