Philosophische Untersuchungen / Philosophical Investigations
Ludwig Wittgenstein
On the Program of the Alliance
Mikhail Bakunin
Cognition, Construction of Knowledge, and Teaching
Ernst von Glasersfeld
Field on the Concept of Truth
Anil Gupta & José Martínez-Fernández
Earthy Realism: The Meaning of Gaia
James Lovelock & Mary Midgley