The six-volume "History of Greek Philosophy" by Professor William Guthrie of the University of Cambridge (1906-1981) won world recognition. Among the most striking advantages of this work are the coverage of a huge range of ancient literature and modern studies, consistency of judgment, clarity and accuracy of English prose. The second of the six volumes is devoted to the late pre-Socratics - the Elean school, Empedocles, Anaxagoras, Democritus.