"...We begin with thought as it is in a quite abstract natu-ral or sensuous form and we proceed from this to the Idea as determined. This first period shows the begin-ning of philosophic thought and goes on to its develop-ment and perfection as a totality of knowledge in itself; this takes place in Aristotle as representing the unity of what has come before. In Plato there is just such a un-ion of what came earlier but it is not worked out for he only represents the Idea generally. The Neo-platonists have been called eclectics and Plato was said to have brought about the unity; they were not however eclec-tics but they had a conscious insight into the necessity for uniting these philosophies..."