Wikimedia
Wikipedia: Karl Marx
This site from Wikipedia provides an in-depth look at the life of philosopher Karl Marx.
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Hegel.net: Hegel E Texts
This site provides links to online versions of many of Hegel's writings in both German and English.
Donald Clark
Johann Friedrich Herbart
Johann Friedrich Herbart (1776-1841) is discussed, the German philosopher, psychologist, and educator acknowledged as the "father of scientific pedagogy."
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Saarland University: Lorenz Oken
Short, concise biography on Oken (1779-1851 CE), a natural scientist, natural philosopher, and doctor.
New Advent
Catholic Encyclopedia: Catholic Encyclopedia: Herbartianism
This article gives an overview of Herbart's life and work in psychology, philosophy and education. Please note that ?The Catholic Encyclopedia? is a historic reference source and should be viewed in the context of resource material dated...