I find this comment valuable because it sheds light on how impressive the book is to read in contrast to the subdued treatment in the article.

Olaf Stapledon explores IQ power levels through world building and I find it interesting how different cognitive levels interact in a world.

- Sirius shows how a dog feels as it wades through the boundary between human intelligence and animal intelligence

- Odd John shows how a group of extraordinary people engaging in a world with normal people

- Last and First men show the IQ power levels of an entire system of "humans" progressing through stages of mankind

- Star Maker is the grand culmination where the entire spirit of the cosmos reaches the highest cognitive state and meets its maker thereby