Precursors
AE (Anno Epoche) era
Ursula leGuin
Howard Gardner
James Lovelock
Industrial Era
Henry David Thoreau
Alan Matthison Turing
Ernest Thompson Seton and Robert Baden-Powell
Rudolf Steiner
J. Howard Moore
Pre-Industrial Era
certain Mediterranean city states of antiquity
indigenas & certain pre-colonial cultures
Jan Amos Comenius
Jean Jacques Rousseau
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