I.—THE SCHOOL OF MILETUS—
I. Thales . . . . . . . . . . . . . . . . . . . 1
II. Anaximander . . . . . . . . . . . . . . . . . 7
II.—THE SCHOOL OF MILETUS (concluded)—
III. Anaximenes . . . . . . . . . . . . . . . . . 14
IV. Heraclitus . . . . . . . . . . . . . . . . . 15
III.—PYTHAGORAS AND THE PYTHAGOREANS . . . . . . . . . 22
IV.—THE ELEATICS—
I. Xenophanes . . . . . . . . . . . . . . . . . 31
II. Parmenides . . . . . . . . . . . . . . . . . 33
V.—THE ELEATICS (concluded)—
III. Zeno . . . . . . . . . . . . . . . . . . . . 42
IV. Melissus . . . . . . . . . . . . . . . . . . 46
VI.—THE ATOMISTS—
I. Anaxagoras . . . . . . . . . . . . . . . . . 52
VII.—THE ATOMISTS (continued)—
II. Empedocles . . . . . . . . . . . . . . . . . 58
VIII.—THE ATOMISTS (concluded)—
III. Leucippus and Democritus . . . . . . . . . . 74
IX.—THE SOPHISTS—
I. Protagoras . . . . . . . . . . . . . . . . . 85
X.—THE SOPHISTS (concluded)—
II. Gorgias . . . . . . . . . . . . . . . . . . . 92