On the announcement of his retirement next year as president of the American Enterprise Institute, Chistopher DeMuth provides a large dose of common sense in this OpinionJournal op-ed:

Think tanks are identified in the public mind as agents of a particular political viewpoint. It is sometimes suggested that this compromises the integrity of their work. Yet their real secret is not that they take orders from, or give orders to, the Bush administration or anyone else. Rather, they have discovered new methods for organizing intellectual activity–superior in many respects (by no means all) to those of traditional research universities.
To be sure, think tanks–at least those on the right–do not attempt to disguise their political affinities in the manner of the (invariably left-leaning) universities. We are “schools” in the old sense of the term: groups of scholars who share a set of philosophical premises and take them as far as we can in empirical research, persuasive writing, and arguments among ourselves and with those of other schools.
This has proven highly productive. It is a great advantage, when working on practical problems, not to be constantly doubling back to first principles. We know our foundations and concentrate on the specifics of the problem at hand. We like to work on hard problems, and there are many fertile disagreements in our halls over bioethics, school reform, the rise of China, constitutional interpretation and what to do about Korea and Iran.
Think tanks aim to produce good research not only for its own sake but to improve the world. We are organized in ways that depart sharply from university organization. Think-tank scholars do not have tenure, make faculty appointments, allocate budgets or offices or sit on administrative committees. These matters are consigned to management, leaving the scholars free to focus on what they do best. Management promotes the scholars’ output with an alacrity that would make many university administrators uncomfortable.
And we pay careful attention to the craft of good speaking and writing. Many AEI scholars do technical research for academic journals, but all write for a wider audience as well. When new arrivals from academia ask me whom they should write for, I tell them: for your Mom. That is, for an interested, sympathetic reader who may not know beans about the technical aspects of your work but wants to know what you’ve discovered and why it makes a difference.

Read the entire piece.