350 BC HISTORY OF ANIMALS by Aristotle translated by D'Arcy Wentworth Thompson Book I 1 OF the parts of animals some are simple: to wit, all such as divide into parts uniform with themselves, as flesh into flesh; others are composite, such as divide into parts not uniform with themselves, as, for instance, the hand does not divide into hands nor the face into faces. And of such as these, some are called not parts merely, but limbs or members. Such are those parts that, while entire in themselves, have within themselves other diverse parts: as for instance, the head, foot, hand, the arm as a whole, the chest; for these are all in thems...

350 BC POSTERIOR ANALYTICS by Aristotle translated by G. R. G. Mure Book I Part 1 ALL instruction given or received by way of argument proceeds from pre-existent knowledge. This becomes evident upon a survey of all the species of such instruction. The mathematical sciences and all other speculative disciplines are acquired in this way, and so are the two forms of dialectical reasoning, syllogistic and inductive; for each of these latter make use of old knowledge to impart new, the syllogism assuming an audience that accepts its premisses, induction exhibiting the universal as implicit in the clearly known particular. Again, the persuasion...

350 BC ON SLEEP AND SLEEPLESSNESS by Aristotle translated by J. I. Beare Part 1 WITH regard to sleep and waking, we must consider what they are: whether they are peculiar to soul or to body, or common to both; and if common, to what part of soul or body they appertain: further, from what cause it arises that they are attributes of animals, and whether all animals share in them both, or some partake of the one only, others of the other only, or some partake of neither and some of both. Further, in addition to these questions, we must also inquire what the dream is, and from what cause sleepers sometimes dream, and sometimes do not; or whet...

350 BC ON LONGEVITY AND SHORTNESS OF LIFE by Aristotle translated by G. R. T. Ross Part 1 THE reasons for some animals being long-lived and others short-lived, and, in a word, causes of the length and brevity of life call for investigation. The necessary beginning to our inquiry is a statement of the difficulties about these points. For it is not clear whether in animals and plants universally it is a single or diverse cause that makes some to be long-lived, others short-lived. Plants too have in some cases a long life, while in others it lasts but for a year. Further, in a natural structure are longevity and a sound constitution coincide...

350 BC ON PROPHESYING BY DREAMS by Aristotle translated by J. I. Beare Part 1 As to the divination which takes place in sleep, and is said to be based on dreams, we cannot lightly either dismiss it with contempt or give it implicit confidence. The fact that all persons, or many, suppose dreams to possess a special significance, tends to inspire us with belief in it [such divination], as founded on the testimony of experience; and indeed that divination in dreams should, as regards some subjects, be genuine, is not incredible, for it has a show of reason; from which one might form a like opinion also respecting all other dreams. Yet the fa...

350 BC ON THE MOTION OF ANIMALS by Aristotle translated by A. S. L. Farquharson Part 1 ELSEWHERE we have investigated in detail the movement of animals after their various kinds, the differences between them, and the reasons for their particular characters (for some animals fly, some swim, some walk, others move in various other ways); there remains an investigation of the common ground of any sort of animal movement whatsoever. Now we have already determined (when we were discussing whether eternal motion exists or not, and its definition, if it does exist) that the origin of all other motions is that which moves itself, and that the ori...

350 BC ON THE SOUL by Aristotle translated by J. A. Smith Book I Part 1 HOLDING as we do that, while knowledge of any kind is a thing to be honoured and prized, one kind of it may, either by reason of its greater exactness or of a higher dignity and greater wonderfulness in its objects, be more honourable and precious than another, on both accounts we should naturally be led to place in the front rank the study of the soul. The knowledge of the soul admittedly contributes greatly to the advance of truth in general, and, above all, to our understanding of Nature, for the soul is in some sense the principle of animal life. Our aim is to gra...

The Athenian Constitution By Aristotle Translated by Sir Frederic G. Kenyon SECTION 1 Part 1 ...[They were tried] by a court empanelled from among the noble families, and sworn upon the sacrifices. The part of accuser was taken by Myron. They were found guilty of the sacrilege, and their bodies were cast out of their graves and their race banished for evermore. In view of this expiation, Epimenides the Cretan performed a purification of the city. Part 2 After this event there was contention for a long time between the upper classes and the populace. Not only was the constitution at this time oligarchical in every respect, but the poorer c...

350 BC ON PROPHESYING BY DREAMS by Aristotle translated by J. I. Beare 1 As to the divination which takes place in sleep, and is said to be based on dreams, we cannot lightly either dismiss it with contempt or give it implicit confidence. The fact that all persons, or many, suppose dreams to possess a special significance, tends to inspire us with belief in it [such divination], as founded on the testimony of experience; and indeed that divination in dreams should, as regards some subjects, be genuine, is not incredible, for it has a show of reason; from which one might form a like opinion also respecting all other dreams. Yet the fact of...

THE POETICS OF ARISTOTLE. A TRANSLATION BY S. H. BUTCHER. [Transcriber's Annotations and Conventions: the translator left intact some Greek words to illustrate a specific point of the original discourse. In this transcription, in order to retain the accuracy of this text, those words are rendered by spelling out each Greek letter individually, such as {alpha beta gamma delta ...}. The reader can distinguish these words by the enclosing braces {}. Where multiple words occur together, they are separated by the "/" symbol for clarity. Readers who do not speak or read the Greek language will usually neither gain nor lose understanding...

350 BC ON YOUTH AND OLD AGE, ON LIFE AND DEATH, ON BREATHING by Aristotle translated by G. R. T. Ross Part 1 WE must now treat of youth and old age and life and death. We must probably also at the same time state the causes of respiration as well, since in some cases living and the reverse depend on this. We have elsewhere given a precise account of the soul, and while it is clear that its essential reality cannot be corporeal, yet manifestly it must exist in some bodily part which must be one of those possessing control over the members. Let us for the present set aside the other divisions or faculties of the soul (whichever of the two b...

350 BC ON INTERPRETATION by Aristotle translated by E. M. Edghill Part 1 First we must define the terms 'noun' and 'verb', then the terms 'denial' and 'affirmation', then 'proposition' and 'sentence.' Spoken words are the symbols of mental experience and written words are the symbols of spoken words. Just as all men have not the same writing, so all men have not the same speech sounds, but the mental experiences, which these directly symbolize, are the same for all, as also are those things of which our experiences are the images. This matter has, however, been discussed in my treatise about...

350 BC ON SENSE AND THE SENSIBLE by Aristotle translated by J. I. Beare Part 1 HAVING now definitely considered the soul, by itself, and its several faculties, we must next make a survey of animals and all living things, in order to ascertain what functions are peculiar, and what functions are common, to them. What has been already determined respecting the soul [sc. by itself] must be assumed throughout. The remaining parts [sc. the attributes of soul and body conjointly] of our subject must be now dealt with, and we may begin with those that come first. The most important attributes of animals, whether common to all or peculiar to some,...

400 BC INSTRUMENTS OF REDUCTION by Hippocrates translated by Francis Adams With regard to the construction of bones, the bones and joints of the fingers are simple, the bones of the hand and foot are numerous, and articulated in various ways; the uppermost are the largest; the heel consists of one bone which is seen to project outward, and the back tendons are attached to it. The leg consists of two bones, united together above and below, but slightly separated in the middle; the external bone (fibula), where it comes into proximity with the little toe, is but slightly smaller than the other, more so where they are separated, and at the k...

400 BC ON ANCIENT MEDICINE by Hippocrates Translated by Francis Adams Part 1 WHOEVER having undertaken to speak or write on Medicine, have first laid down for themselves some hypothesis to their argument, such as hot, or cold, or moist, or dry, or whatever else they choose (thus reducing their subject within a narrow compass, and supposing only one or two original causes of diseases or of death among mankind), are all clearly mistaken in much that they say; and this is the more reprehensible as relating to an art which all men avail themselves of on the most important occasions, and the good operators and practitioners in which they hold ...

Categories By Aristotle Translated by E. M. Edghill SECTION 1 Part 1 Things are said to be named 'equivocally' when, though they have a common name, the definition corresponding with the name differs for each. Thus, a real man and a figure in a picture can both lay claim to the name 'animal'; yet these are equivocally so named, for, though they have a common name, the definition corresponding with the name differs for each. For should any one define in what sense each is an animal, his definition in the one case will be appropriate to that case only. On the other hand, things are said to be named 'univocally' which...

ON MEMORY AND REMINISCENCE (350 BC) by Aristotle translated by J. I. Beare 1 WE have, in the next place, to treat of Memory and Remembering, considering its nature, its cause, and the part of the soul to which this experience, as well as that of Recollecting, belongs. For the persons who possess a retentive memory are not identical with those who excel in power of recollection; indeed, as a rule, slow people have a good memory, whereas those who are quick-witted and clever are better at recollecting. We must first form a true conception of these objects of memory, a point on which mistakes are often made. Now to remember the future is not...

LAWS (360 BC) by Plato translated by Benjamin Jowett BOOK I PERSONS OF THE DIALOGUE: An ATHENIAN STRANGER; CLEINIAS, a Cretan; MEGILLUS, a Lacedaemonian Athenian Stranger. Tell me, Strangers, is a God or some man supposed to be the author of your laws? Cleinias. A God, Stranger; in very truth a, God: among us Cretans he is said to have been Zeus, but in Lacedaemon, whence our friend here comes, I believe they would say that Apollo is their lawgiver: would they not, Megillus? Megillus. Certainly. Athenian Stranger. And do you, Cleinias, believe, as Homer tells, that every ninth year Minos went to converse with his Olympian sire, and was in...

PARMENIDES (370 BC) by Plato translated by Benjamin Jowett PERSONS OF THE DIALOGUE: CEPHALUS; ADEIMANTUS; GLAUCON; ANTIPHON; PYTHODORUS; SOCRATES; ZENO; PARMENIDES; ARISTOTELES. Cephalus rehearses a dialogue which is supposed to have been narrated in his presence by Antiphon, the half-brother of Adeimantus and Glaucon, to certain Clazomenians. We had come from our home at Clazomenae to Athens, and met Adeimantus and Glaucon in the Agora. Welcome, Cephalus, said Adeimantus, taking me by the hand; is there anything which we can do for you in Athens? Yes; that is why I am here; I wish to ask a favour of you. What may that be? he said. I want...

LACHES OR COURAGE (380 BC) by Plato translated by Benjamin Jowett PERSONS OF THE DIALOGUE: LYSIMACHUS, son of Aristides; MELESIAS, son of Thucydides; THEIR SONS; NICIAS; LACHES; Socrates. Lysimachus. You have seen the exhibition of the man fighting in armour, Nicias and Laches, but we did not tell you at the time the reason why my friend Melesias and I asked you to go with us and see him. I think that we may as well confess what this was, for we certainly ought not to have any reserve with you. The reason was, that we were intending to ask your advice. Some laugh at the very notion of advising others, and when they are asked will not say ...