Bertrand Meyer Quotes

Software entities (classes, modules, functions, etc.) should be open for extension, but closed for modification.

C++ is the only current language making COBOL look good

Writing a class without its contract would be similar to producing an engineering component (electrical circuit, VLSI (Very Large Scale Integration) chip, bridge, engine…) without a spec. No professional engineer would even consider the idea.

There are only two things wrong with C++: The initial concept and the implementation.

Perfect reusable components are not obtained at the first shot.

The role of a trainer or consultant is to empower the customer, not to make himself indispensable

Eiffel borrows quite openly from several earlier programming languages and I am sure that if we had found a good language construct in C we would have used it as well.

I think Smalltalk is inappropriate for serious industrial developments. After all, run time is a little late to find out whether you have a landing gear.

Correctness is clearly the prime quality. If a system does not do what it is supposed to do, then everything else about it matters little.

As Mr. Nagle so competently points out, almost no one uses Eiffel; in fact until recently there were only 9 users. But now a 10th person just started, so we are holding a conference, appropriately titled the TENTH Eiffel USER conference, to celebrate.

You can either have software quality or you can have pointer arithmetic, but you cannot have both at the same time.

Constants are widely known for the detestable practice of changing their values; we should prepare ourselves against the consequences of such fickleness

Ask not first what the system does; ask what it does it to!

I have always felt sympathy towards the biologists who accept to debate creationists. Now I also understand them better; one can fight opinions, not articles of faith.