But active programming consists of the design of new programs, rather than contemplation of old programs. – Niklaus Wirth

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

Clearly, programming courses should teach methods of design and construction, and the selected examples should be such that a gradual development can be nicely demonstrated. – Niklaus Wirth