Rudolf Steiner
Heiner Ullrich
Jean Piaget
Richard Köhler
Robert Owen
Frank O’Hagan & Robert A. Davis
John Locke
Alexander Moseley
Lev Vygotsky
Rene van der Veer
A. S. Neill
Richard Bailey
Michel Foucault
Lynn Fendler
Loris Malaguzzi and the Reggio Emilia Experience
Maura Cunneen, Mary Horgan, Anna Ridgway, Denice Cunningham, Rosaleen Murphy & Kathy Hall
Aristotle
Alexander Moseley
St Augustine
Ryan N. S. Topping