In universities and intellectual circles, academics can guarantee themselves popularity -- or, which is just as satisfying, unpopularity -- by being opinionated rather than by being learned.

Summary

This quote suggests that academics and intellectuals can easily gain popularity or notoriety among their peers by expressing strong and controversial opinions, rather than focusing on their knowledge and expertise in any particular field. It implies that being outspoken and opinionated can garner more attention and recognition than embracing a truly scholarly approach. In such circles, having an opinion becomes valued more than actually being well-informed or knowledgeable.