One unrepaired broken window is a signal that no one cares, and so breaking more windows costs nothing.

[in 1998] I know my political ideas affect what I write but I've tried to follow the facts wherever they land. Every topic I've written about begins as a question. How do police departments behave? Why do bureaucracies function the way they do? What moral intuitions do people have? How do courts make their decisions? What do blacks want from the political system? I can honestly say I didn't know the answers to those questions when I began looking into them.

I mean that the function of the police is to solve problems that have law-enforcement consequences in a way that is based on a genuine partnership with the neighborhood in both the venting of the problem and the discussion of the solution.

The view that we know less than we thought we knew about how to change the human condition came, in time, to be called neoconservatism. Many ... , myself included, disliked the term because we did not think we were conservative, neo or paleo. (I voted for John Kennedy, Lyndon Johnson and Hubert Humphrey and worked in the latter's presidential campaign.) It would have been better if we had been called policy skeptics; that is, people who thought it was hard, though not impossible, to make useful and important changes in public policy.

Window-breaking does not necessarily occur on a large scale because some areas are inhabited by determined window-breakers whereas others are populated by window-lovers; rather, one unrepaired broken window is a signal that no one cares, and so breaking more windows costs nothing.

A government without the power of defense! It is a solecism.

Broken Window Theory: Consider a building with a few broken windows. If the windows are not repaired, the tendency is for vandals to break a few more windows. Eventually, they may even break into the building, and if it's unoccupied, perhaps become squatters or light fires inside. Or consider a sidewalk. Some litter accumulates. Soon, more litter accumulates. Eventually, people even start leaving bags of trash from take-out restaurants there or even break into cars.