The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.
Edsger DijkstraWe shall do a much better programming job, provided that we approach the task with a full appreciation of its tremendous difficulty, provided that we stick to modest and elegant programming languages, provided that we respect the intrinsic limitations of the human mind and approach the task as Very Humble Programmers.
Edsger DijkstraSome consider the puzzles that are created by their omissions as spicy challenges, without which their texts would be boring; others shun clarity lest their work is considered trivial.
Edsger Dijkstra