Precursors

Pre-Industrial Era

indigenas & certain pre-colonial cultures

certain Mediterranean city states of antiquity

Jan Amos Comenius

Jean Jacques Rousseau

Industrial Era

Henry David Thoreau

Ernest Thompson Seton and Robert Baden-Powell

J. Howard Moore

Alan Matthison Turing

Rudolf Steiner

AE (Anno Epoche) era

James Lovelock

Howard Gardner

Ursula leGuin