and condensation of the latter resulting in fire and water respectively. The stars were conceived by Archelaus to be burning iron places. Heraclitus (who lived 536-470 B.C. and is sometimes included in the Ionic school) in his doctrine of change and eternal flux asserted fire to be the first element and also the state into which the world would ultimately be reabsorbed. The soul of the world he regarded as an exhalation from its humid parts, and he declared the ebb and flow of the sea to be caused by the sun.
BABBITT'S ATOM. From Babbitt's Principles of Light and Color.
Since the postulation of the atomic theory by Democritus, many efforts have been made to determine the structure of atoms and the method by which they unite to form various elements, Even science has not refrained from entering this field of speculation and presents for consideration most detailed and elaborate representations of these minute bodies. By far the most remarkable conception of the atom evolved during the last century is that produced by the genius of Dr. Edwin D. Babbitt and which is reproduced herewith. The diagram is self-explanatory. It must be borne in mind that this apparently massive structure is actually as minute as to defy analysis. Not only did Dr. Babbitt create this form of the atom but he also contrived a method whereby these particles could be grouped together in an orderly manner and thus result in the formation of molecular bodies.
After Pythagoras of Samos, its founder, the Italic or Pythagorean school numbers among its most distinguished representatives Empedocles, Epicharmus, Archytas, Alcmaeon, Hippasus, Philolaus, and Eudoxus. Pythagoras (580-500? B.C.) conceived mathematics to be the most sacred and exact of all the sciences, and demanded of all who came to him for study a familiarity with arithmetic, music, astronomy, and geometry. He laid special emphasis upon the philosophic life as a prerequisite to wisdom. Pythagoras was one of the first teachers to establish a community wherein all the members were of mutual assistance to one another in the common attainment of the higher sciences. He also introduced the discipline of retrospection as essential to the development of the spiritual mind.
Pythagoreanism may be summarized as a system of metaphysical speculation concerning the relationships between numbers and the causal agencies of existence. This school also first expounded the theory of celestial harmonics or "the music of the spheres." John Reuchlin said of Pythagoras that he taught nothing to his disciples before the discipline of silence, silence being the first rudiment of contemplation. In his Sophist, Aristotle credits Empedocles with the discovery of rhetoric. Both Pythagoras and Empedocles accepted the theory of transmigration, the latter saying: "A boy I was, then did a maid become; a plant, bird, fish, and in the vast sea swum." Archytas is credited with invention of the screw and the crane. Pleasure he declared to be a pestilence because it was opposed to the temperance of the mind; he considered a man without deceit to be as rare as a fish without bones.
The Eleatic sect was founded by Xenophanes (570-480 B.C.), who was conspicuous for his attacks upon the cosmologic and theogonic fables of Homer and Hesiod. Xenophanes declared that God was "one and incorporeal, in substance and figure round, in no way resembling man; that He is all sight and all hearing, but breathes not; that He is all things, the mind and wisdom, not generate but eternal, impassible, immutable, and rational." Xenophanes believed that all existing things were eternal, that the world was without beginning or end, and that everything which was generated was subject to corruption.
He lived to great age and is said to have buried his sons with his own hands. Parmenides studied under Xenophanes, but never entirely subscribed to his doctrines. Parmenides declared the senses to be uncertain and reason the only criterion of truth. He first asserted the earth to be round and also divided its surface into zones of heat and cold.
Melissus, who is included in the Eleatic school, held many opinions in common with Parmenides. He declared the universe to be immovable because, occupying all space, there was no place to which it could be moved. He further rejected the theory of a vacuum in space. Zeno of Elea also maintained that a vacuum could not exist. Rejecting the theory of motion, he asserted that there was but one God, who was an eternal, ungenerated Being. Like Xenophanes, he conceived Deity to be spherical in shape.
Leucippus held the Universe to consist of two parts: one full and the other a vacuum. From the Infinite a host of minute fragmentary bodies descended into the vacuum, where, through continual agitation, they organized themselves into spheres of substance.
The great Democritus to a certain degree enlarged upon the atomic theory of Leucippus. Democritus declared the principles of all things to be twofold: atoms and vacuum. Both, he asserted, are infinite -- atoms in number, vacuum in magnitude. Thus all bodies must be composed of atoms or vacuum. Atoms possessed two properties, form and size, both characterized by infinite variety. The soul Democritus also conceived to be atomic in structure and subject to dissolution with the body. The mind he believed to be composed of spiritual atoms. Aristotle intimates that Democritus obtained his atomic theory from the Pythagorean doctrine of the Monad. Among the Eleatics are also included Protagoras and Anaxarchus.
Socrates (469-399 B.C.), the founder of the Socratic sect, being fundamentally a Skeptic, did not force his opinions upon others, but through the medium of questionings caused each man to give expression to his own philosophy. According to Plutarch, Socrates conceived every place as appropriate for reaching in that the whole world was a school of virtue. He held that the soul existed before the body and, prior to immersion therein, was endowed with all knowledge; that when the soul entered into the material form it became stupefied, but that by discourses upon sensible objects it was caused to reawaken and to recover its original knowledge. On these premises was based his attempt to stimulate the soul-power through irony and inductive reasoning. It has been said of Socrates that the sole subject of his philosophy was man. He himself declared philosophy to be the way of true happiness and its purpose twofold: (1) to contemplate God, and (2) to abstract the soul from corporeal sense.
The principles of all things he conceived to be three in number: God, matter, and ideas. Of God he said:
"What He is I know not; what He is not I know." Matter he defined as the subject of generation and corruption; idea, as an incorruptible substance -- the intellect of God. Wisdom he considered the sum of the virtues. Among the prominent members of the Socratic sect were Xenophon, Aeschines, Crito, Simon, Glauco, Simmias, and Cebes. Professor Zeller, the great authority on ancient philosophies, has recently declared the writings of Xenophon relating to Socrates to be forgeries. When The Clouds of Aristophanes, a comedy written to ridicule the theories of Socrates, was first presented, the great Skeptic himself attended the play. During the performance, which caricatured him seated in a basket high in the air studying the sun, Socrates rose calmly in his seat, the better to enable the Athenian spectators to compare his own unprepossessing features with the grotesque mask worn by the actor impersonating him.
The Elean sect was founded by Phaedo of Elis, a youth of noble family, who was bought from slavery at the instigation of Socrates and who became his devoted disciple. Plato so highly admired Phaedo's mentality that he named one of the most famous of his discourses The Phaedo. Phaedo was succeeded in his school by Plisthenes, who in turn was followed by Menedemus. Of the doctrines of the Elean sect little is known. Menedemus is presumed to have been inclined toward the teachings of Stilpo and the Megarian sect. When Menedemus' opinions were demanded, he answered that he was free, thus intimating that most men were enslaved to their opinions. Menedemus was apparently of a somewhat belligerent temperament and often returned from his lectures in a badly bruised condition. The most famous of his propositions is stated thus: That which is not the same is different from that with which it is not the same. This point being admitted, Menedemus continued: To benefit is not the same as good, therefore good does not benefit. After the time of Menedemus the Elean sect became known as the Eretrian. Its exponents denounced all negative propositions and all complex and abstruse theories, declaring that only affirmative
