Plato (427-347 BC)
A Greek philosopher, pupil of Socrates and Aristotle’s teacher. Dealt with the nature of the universe; developed atomic theory of chemical change; ascribed geometric forms composed of bounding planes to the elements of earth, fire, air and water based upon their physical properties; held that elements could convert into one another through rearrangement of bounding planes; used deductive reasoning as a learning method.
- Famous Quotes:
- "Mathematics is like checkers in being suitable for the young, not too difficult, amusing, and without peril to the state."
- "He is unworthy of the name of man who is ignorant of the fact that the diagonal of a square is incommensurable with its side."