The three most important aspects of debugging and real estate are the same: Location, Location, and Location.

When teaching a rapidly changing technology, perspective is more important than content.

The structure of a software system provides the ecology in which code is born, matures, and dies. A well-designed habitat allows for the successful evolution of all the components needed in a software system.

When debugging, novices insert corrective code; experts remove defective code.

Code should run as fast as necessary, but no faster; something important is always traded away to increase speed.

The discipline of programming is most like sorcery. Both use precise language to instruct inanimate objects to do our bidding. Small mistakes in programs or spells can lead to completely unforseen behavior: e.g., see the story, "The Sorcerer's Apprentice". Neither study is easy: "...her [Galinda's] early appetite for sorcery had waned once she'd heard what a grind it was to learn spells and, worse, to understand them." from the book "Wicked" by G. Maguire.

A class, in Java, is where we teach objects how to behave.