Anaximenes to Pythagoras Thales, the son of Examyas, has met an unkind fate in his old age. He went out from the court of his house at night, as was his custom, with his maidservant to view the stars, and, forgetting where he was, as he gazed, he got to the edge of a steep slope and fell over. In such wise have the Milesians lost their astronomer. Let us who were his pupils cherish his memory, and let it be cherished by our children and pupils; and let us not cease to entertain one another with his words. Let all our discourse begin with a reference to Thales. And again: Anaximenes to Pythagoras You were better advised than the rest of us when you left Samos for Croton, where you live in peace. For the sons of Aeaces work incessant mischief, and Miletus is never without tyrants. The king of the Medes is another terror to us, not indeed so long as we are willing to pay tribute; but the Ionians are on the point of going to war with the Medes to secure their common freedom, and once we are at war we have no more hope of safety. How then can Anaximenes any longer think of studying the heavens when threatened with destruction or slavery? Meanwhile you find favour with the people of Croton and with the other Greeks in Italy; and pupils come to you even from Sicily. Chapter 3. ANAXAGORAS Diels ( Dox. Gr. p. 137) compares Hippolytus, Ref. Haer. i. 8. 1-11; Aëtius, i. 3. 5; iv. 1. 3; ii. 20. 6; ii. 21. 3; ii. 28. 5; ii. 29. 7; ii. 23. 2; ii. 25. 9; iii. 1. 5; iii. 2. 2; iii. 2. 9; iii. 3. 4; iii. 15. 14; v. 7. 4, and Theophrastus, Phys. Opin. Fr. 4. For Anaxagoras as astronomer see Sir T. L. Heath, Aristarchus of Samos , pp. 78-85. (500-428 B.C.) Anaxagoras, the son of Hegesibulus or Eubulus, was a native of Clazomenae. He was a pupil of Anaximenes, and was the first who set mind above matter, for at the beginning of his treatise, which is composed in attractive and dignified language, he says, All things were together; then came Mind and set them in order. This earned for Anaxagoras himself the nickname of Nous or Mind, and Timon in his Silli says of him Fr. 24 d. :
 Then, I ween, there is Anaxagoras, a doughty champion, whom they call Mind, because forsooth his was the mind which suddenly woke up and fitted closely together all that had formerly been in a medley of confusion. He was eminent for wealth and noble birth, and furthermore for magnanimity, in that he gave up his patrimony to his relations. For, when they accused him of neglecting it, he replied, Why then do you not look after it? And at last he went into retirement and engaged in physical investigation without troubling himself about public affairs. When some one inquired, Have you no concern in your native land? Gently, he replied, I am greatly concerned with my fatherland, and pointed to the sky. He is said to have been twenty years old at the invasion of Xerxes and to have lived seventy-two years. Apollodorus in his Chronology says that he was born in the 70th Olympiad, 500-497 b.c. and died in the first year of the 88th Olympiad. 428 b.c. He began to study philosophy at Athens in the archonship of Callias i.e. 456 b.c.; but possibly the year 480 is meant, when Calliades was archon. when he was twenty; Demetrius of Phalerum states this in his list of archons; and at Athens they say he remained for thirty years. He declared the sun to be a mass of red-hot metal and to be larger than the Peloponnesus, though others ascribe this view to Tantalus; he declared that there were dwellings on the moon, and moreover hills and ravines. He took as his principles the homoeomeries or homogeneous molecules; for just as gold consists of fine particles which are called gold-dust, so he held the whole universe to be compounded of minute bodies having parts homogeneous to themselves. His moving principle was Mind; of bodies, he said, some, like earth, were heavy, occupying the region below, others, light like fire, held the region above, while water and air were intermediate in position. For in this way over the earth, which is flat, the sea sinks down after the moisture has been evaporated by the sun.