BOOK I - lntroduction  ·  June 19, 2019, 5:25 GMT
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BOOK I - lntroduction

BOOK I - lntroduction - from Tetrabiblos by Claudius Ptolemy

Of the means of prediction through astronomy, O Syrus, two ara the most important and valid. One, which is first both in order and in effectiveness, is that whereby we apprehend the aspects of the move­ments of sun, moon, and stars in relation to each other and to the earth, as they occur from time to time; the second is that in which by means of the natural character of these aspects themselves we investigate the changes which they bring about in that which they surround. The first of these, which has its own science, desirable in itself even though it does not attain the result given by its combination with the second, has been expounded to you as best we could in its own treatise by the method of demonstration. We shall now give an account of the second and less self-sufficient method in a properly philosophical way, so that one whose aim is the truth might never compare its perceptions with the sureness of the first, unvarying science, for he ascribes to it the weakness and unpredictability of material qualities found in individual things, nor yet refrain from such investigation as is within the bounds of possibility, when it is so evident that most events of a general nature draw their causes from the enveloping heavens. But since everything that is hard to attain is easily assailed by the generality of men, and in the case of the two before-mentioned disciplines the allegations against the first could be made only by the blind, while there are specious grounds for those levelled at the second-for its difficulty in parts has made them think it completely incomprehensible, or the difficulty of escaping what is known has disparaged even its object as useless­-we shall try to examine briefly the measure of both the possibility and the usefulness of such prognostication before offering detailed instruction on the subject. First as to its possibility.


Tetrabiblos - Table of contents:  

Book I

BOOK I - Introduction
Knowledge by Astronomical Means
That it is also Beneficial
Power of the Planets
Beneficent and Maleficent Planets
Masculine and Feminine Planets
Diurnal and Nocturnal Planets
Power of the Aspects to the Sun
Power of the Fixed Stars
Effect of the Seasons and of the Four Angles
Solstitial, Equinoctial, Solid, and Bicorporeal Signs
Masculine and Feminine Signs
Aspects of the Signs
Commanding and Obeying Signs
Signs which Behold each other and Signs of Equal Power
Disjunct Signs
Houses of the Several Planets
Triangles
Exaltations
Disposition of Terms
According to the Chaldaeans
Places and Degrees
Faces, Chariots, and the Like
Applications and Separations and the Other Powers

Book II

BOOK II - Introduction
Characteristics of the Inhabitants of the General Climes
Familiarities between Countries and the Triplicities and Stars
Method of Making Particular Predictions
Examination of the Countries Affected
Time of the Predicted Events
Class of those Affected
Quality of the Predicted Event
Colours of Eclipses, Comets, and the Like
New Moon of the Year
Nature of the Signs, Part by Part, and their Effect upon the Weather
Investigation of Weather in Detail
Significance of Atmospheric Signs

Book III

BOOK III - Introduction
Degree of the Horoscopic Point
Subdivision of the Science of Nativities
Parents
Brothers and Sisters
Males and Females
Twins
Monsters
Children that are not Reared
Length of Life
Bodily Form and Temperament
Bodily Injuries and Diseases
Quality of the Soul
Diseases of the Soul

Book IV

BOOK IV - Introduction
Material Fortune
Fortune of Dignity
Quality of Action
Marriage
Children
Friends and Enemies
Foreign Travel
Quality of Death
Division of Times