The Man Who Knew Infinity: A Life of the Genius Ramanujan

Name: The Man Who Knew Infinity: A Life of the Genius Ramanujan
Author: Robert Kanigel

Safe for the age band

Age-appropriate with no significant concerns.

Published: 1991
Ages: 16–18

About the book

The biography of the Indian mathematical genius Srinivasa Ramanujan.

AI summary

The biography of the Indian mathematical genius Srinivasa Ramanujan.

Why parents choose this book

What makes The Man Who Knew Infinity: A Life of the Genius Ramanujan worth choosing

An honest, parent-first look at who this book suits, what it offers, and what to know before you buy.

Best for

Age range: 16–18.
Reading maturity: Young adult — teen protagonists and more nuanced themes.
Kids who tend to love it: Biography.
Personality fit: kids ages 16–18 who enjoy a good story.

Parents love this book because

Age-appropriate content for the 16–18 band with no significant flags.
Written by Robert Kanigel, whose books parents return to for consistently thoughtful storytelling.

Your child will probably enjoy The Man Who Knew Infinity: A Life of the Genius Ramanujan if they…

Enjoy stories written for kids around ages 16–18

This book helps develop

Vocabulary, sustained attention, and reading confidence for the 16–18 age band.

Things parents should know

No significant content concerns for this age band. Preview with your reader if you want to discuss any specific themes.

Reading commitment

Estimated reading time

Varies by reader

Length

Length varies by edition

Difficulty

Young adult

Works as read-aloud

Usually read independently

Good for independent readers

Yes — suits confident readers in the age band

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Why we recommend it

We think The Man Who Knew Infinity: A Life of the Genius Ramanujan is a confident pick for the 16–18 age band. It leans into biography in a way that feels genuine, not formulaic. Robert Kanigel's voice is what makes it stick: readable, respectful of kids, and easy to hand to the next child in the family.