But the costs and difficulties of the work involved offer a host of cautionary lessons.

The hour offers a cautionary political lesson about overreactions in politics.

Moreover, the experience of the Medicare expansion, the biggest in nearly 40 years, offers a cautionary lesson.

Police departments in other cities played the tape for their officers as a cautionary lesson.

Perhaps this represents a cautionary lesson against excessive sexual repression.

It is at once a celebration of aging and a cautionary lesson.

The score could be taken as a cautionary lesson about the challenges of combining music from different cultures.

It is, at least, a cautionary lesson in what happens when a political movement wraps itself around a single personality.

The answer is justice and a cautionary lesson.

There were many cautionary lessons in what not to do.