Capital: A Critique of Political Economy, Vol. 1 (Penguin)
Karl Marx & Friedrich Engels
Logical Foundations of Probability
Rudolf Carnap
On the Policy of the International Workingmen’s Association
Mikhail Bakunin
The Way to Design
Steve Vassallo
Rethinking Money: How New Currencies Turn Scarcity into Prosperity
Bernard A. Lietaer & Jacqui Dunne