Plato is one of the most important Western philosophers, exerting influence on virtually every figure in philosophy after him. He was the student of Socrates. All Western philosophy is, as Dr, Whitehead said, "a footnote to Plato." Despite all of the technology and other changes, not a single Western philosopher, to date, has discussed or invented any idea that is not already present in Plato's work His dialogue The Republic is known as the first comprehensive work on political philosophy. Plato