# The Tetrad

Canonical: https://www.bookquiver.com/adam-greenfield/the-tetrad/9798999793041

![The Tetrad](https://quivercdn.com/covers/ill-will/adam-greenfield/the-tetrad_979-89-9979-304-1-b8fa54e2.jpg?v=2026-09-24%2004%3A15%3A22)

- Book: [The Tetrad](https://www.bookquiver.com/adam-greenfield/the-tetrad) ([The Tetrad.md](https://www.bookquiver.com/adam-greenfield/the-tetrad.md))
- Authors: [Adam Greenfield](https://www.bookquiver.com/adam-greenfield)
- Publisher: ill_will
- ISBN: 979-89-9979-304-1
- Pages: 144
- Published: 2027-06-01
- Language: en_US
- Binding: Softcover

## Description

" The Sun, the Earth, the Biosphere, and human labor: the four sources of everything that matters—and which economics cannot see." Within capitalism or beyond it, any possible economic system implies...