This speech discusses concrete entities and abstract phenomena--focusing especially on the ideas of Plato and Aristotle. The author first explains that, according to Plato and Aristotle, there is a qualitative difference between things classified as concrete and those labeled abstract. She then questions whether there really is a difference…

The idea that the brain may be more complex and varied in the ways that it responds to and interprets information than is generally recognized suggests that both the left and right hemispheres are in need of total development. In discussing the development of curriculum that will bring into harmony the functions of both brain hemispheres, it is…