If you like this kind of thing, check out The Development of Doctrine (Newman). Snippet: "It is indeed sometimes said that the stream is clearest near the spring. Whatever use may fairly be made of this image, it does not apply to the history of a philosophy or belief, which on the contrary is more equable, and purer, and stronger, when its bed has become deep, and broad, and full."
The name pureORM reflects both that it is pure ORM (there is no query builder dimension) as well as the purity of the mapped Objects.
[1] https://github.com/craigmichaelmartin/pure-orm