"A revolution is taking place in the way we write programs and teach programming, because we are beginning to understand the associated mental processes more deeply. It is impossible to read the recent [E. W. Dijkstra, O.-J. Dahl, and C. A. R. Hoare] book Structured Programming, without having it change your life. The reason for this revolution and its future prospects have been aptly described by E.W. Dijkstra in his 1972 Turing Award Lecture, The Humble Programmer."