Despite its oppressive self-seriousness, the show remains an essential pop-cultural text.

It is an essential text in theater courses, and the Grove Press edition has now sold more than 1.6 million copies.

Although these works have been superseded by more recent research in some respects, they are still seen as essential texts in the field.

Michael Shermer praised the book as "an essential text" and summarized the argument, writing that:

McElroy is credited with giving birth to the idea of brand management and his 3 page memo is one of the industry's essential texts.

The poem has been included as an essential text in Hong Kong secondary school textbooks since the 1990s.

While most other modern critics have little positive to say about the story's writing, Ralph 124C 41+ is still considered an "essential text for all studies of science fiction."

Or perhaps there is some absolutely essential and utterly mystifying text on the chemistry of plastics without which today's world would be entirely different.

Until the development of the Internet, I kept my unhealthy interest in check by limiting my medical library to a few essential texts.

This compromise should enable the European Parliament to assert its point of view on the adoption of this essential text.