Poster for Bolland

Bolland (1983) Parents Guide: Is the book OK for kids?

Age Rating, Sex, Violence & Language

Sphereland: A Fantasy About Curved Spaces and an Expanding Universe (Dutch: Bolland : een roman van gekromde ruimten en uitdijend heelal) is a 1957 novel by Dionys Burger, and is a sequel to Flatland, a novel by "A Square" (a pen name of Edwin Abbott Abbott). The novel expands upon the social and mathematical foundations on which Flatland is based. It is markedly different from the first novel in that it has a more prosaic ending and treatment of society.

Middle Grade • 1983 • 208 pages • Grade 8-10

5.0
Average rating by Bontent members
Sign up for full access
Age
10+

Sphereland is a mathematical allegory and sequel to Flatland, focusing on the exploration of curved spaces, non-Euclidean geometry, and an expanding universe. It is a dry, philosophical, and intellectual work intended for readers interested in geometric theory and social satire. There is no sexual content, harsh language, or substance use, and violence is entirely absent from the text.

Sign up to get 40,000+ Bontent parent guides
Unlock ratings, reviews, recommendations and guides for all content types

Is Bolland appropriate for kids?

Sphereland is a mathematical allegory and sequel to Flatland, focusing on the exploration of curved spaces, non-Euclidean geometry, and an expanding universe. It is a dry, philosophical, and intellectual work intended for readers interested in geometric theory and social satire… Read more — free account

Content severity in Bolland

Sex None 0/10
Violence None 0/10
Language Mild 1/10
Substances None 0/10
Themes Mild 2/10

What happens in Bolland, moment by moment

  1. p. 10 🔥 Mature Themes 1/10
  2. p. 25 🔥 Mature Themes 1/10
  3. p. 32 🔥 Mature Themes 1/10
Unlock all 16 flagged passages — free account →

Sex and nudity in Bolland

This book contains no sexual content, references, or romantic subplots. The characters are geometric shapes existing in a non-biological society where reproduction and lineage are handled through mathematical evolution rather than physical intimacy. Their interactions are strictly professional, academic, or familial in a structural sense. There is nothing in this book that would be considered inappropriate for any age group regarding sexuality, as the concepts of gender and attraction are replaced by social class…

Read more — free account

Violence and gore in Bolland

There is no physical violence, combat, or aggression depicted in this novel. Conflict is entirely intellectual and social, stemming from the rejection of scientific theories by a conservative establishment that refuses to believe in higher dimensions. Characters face the threat of imprisonment or social exile, as seen in the legacy of A Square, but no scenes of battery or war occur. Disputes are settled through formal debate, professional ostracization, or the presentation of mathematical evidence rather than…

Read more — free account

Language in Bolland

The language is formal, academic, and dated, reflecting the 1957 origin of the text and its predecessor's Victorian influence. There is no profanity, slang, or offensive terminology present within the dialogue or narration. The prose is designed to be clear and explanatory, often reading more like a mathematical essay or a lecture on physics than a modern narrative novel. Parents should find the vocabulary challenging for young readers but entirely clean in terms of vulgarity.

Drugs, alcohol, and smoking in Bolland

There is no substance use depicted in this book. No characters consume alcohol, drugs, or tobacco, and there are no scenes set in environments where such items would be present. The story focuses exclusively on scientific discovery, the curvature of space, and the philosophical implications of geometry. The characters do not require sustenance in a way that includes the depiction of food or drink, leaving no room for the portrayal of any lifestyle-related vices or addictions.

Mature themes in Bolland

The core themes revolve around scientific skepticism, the difficulty of institutional change, and the pursuit of truth against established dogma. It addresses the isolation faced by innovators like the Hexagon and the slow, often painful progression of intellectual advancement in a society that fears change. These mature concepts are explored through a dense, metaphorical lens that requires a high level of reading comprehension and patience. The book also touches on themes of cosmic insignificance as characters…

Read more — free account

Bontent Member Reviews

Register for free to join the conversation!

Frequently Asked Questions

Is Bolland appropriate for kids?

Bontent's parent guide suggests Bolland is best for ages 10+. Sphereland is a mathematical allegory and sequel to Flatland, focusing on the exploration of curved spaces, non-Euclidean geometry, and an expanding universe. It is a dry, philosophical, and intellectual work intended…

What age rating does Bolland have?

Books don't carry official age ratings. Bolland is published for a Middle Grade audience, and Bontent's independent parent guide recommends it for ages 10+.

What reading level is Bolland?

Bolland is 208 pages and its reading level is Grade 8-10. Bontent recommends it for ages 10+.

What is Bolland about?

Sphereland is a mathematical allegory and sequel to Flatland, focusing on the exploration of curved spaces, non-Euclidean geometry, and an expanding universe. It is a dry, philosophical, and intellectual work intended for readers interested in geometric theory and social satire. There is no sexual content, harsh…

Is there sex or nudity in Bolland?

This book contains no sexual content, references, or romantic subplots. The characters are geometric shapes existing in a non-biological society where reproduction and lineage are handled through mathematical evolution rather than physical intimacy. Their…

How violent is Bolland?

There is no physical violence, combat, or aggression depicted in this novel. Conflict is entirely intellectual and social, stemming from the rejection of scientific theories by a conservative establishment that refuses to believe in higher dimensions…

Is the language in Bolland appropriate for kids?

The language is formal, academic, and dated, reflecting the 1957 origin of the text and its predecessor's Victorian influence. There is no profanity, slang, or offensive terminology present within the dialogue or narration. The prose is designed to be clear…

Are drugs, alcohol, or smoking depicted in Bolland?

There is no substance use depicted in this book. No characters consume alcohol, drugs, or tobacco, and there are no scenes set in environments where such items would be present. The story focuses exclusively on scientific discovery, the curvature of space…

What mature themes appear in Bolland?

The core themes revolve around scientific skepticism, the difficulty of institutional change, and the pursuit of truth against established dogma. It addresses the isolation faced by innovators like the Hexagon and the slow, often painful progression of…

Where can I read the full Bolland parent guide?

Create a free Bontent account to unlock page-level notes, filter by your kids' ages, and save titles to your watchlist.

Sign up for access to 40,000+ parent guides.