>I therefore awaited eagerly the appearance of a textbook, a fundamental guide to programming from his pen. But he had lost his interest in this endeavor, and i

>I therefore awaited eagerly the appearance of a textbook, a fundamental guide to programming from his pen. But he had lost his interest in this endeavor, and instead concentrated exclusively on mathematical treatments and theories. So Wirth himself decided to write it viz. Systematic Programming: An Introduction.