Astrology has actually nothing to do with the Stars but is the 5000 year old psychology of antiquity and the Middle Ages. ~Carl Jung, Letters Vol. 1, Page 56.

Jung noted: “Astrologically the beginning of the next aeon, according to the starting point you select, falls between AD 2000 and 2200” (CW 9,2, §149, note 88). ~Liber Novus, Page 316, Footnote 274.

So the first science was astrology. That was an attempt of man to establish a line of communication between the remotest objects and himself. ~Carl Jung, Zarathustra Seminar, Page 1496.

Synchronous events are widely accepted in Chinese philosophy and are the basis of astrology. ~Carl Jung, Conversations with C.G. Jung, Page 51.

the Creator God [takes] on an astromythological, or rather an astrological, character. He has become the sun, and thus finds a natural expression that transcends his moral division into a Heavenly Father and his counterpart the devil. ~Carl Jung; CW 5, Para 176.

And it is a curious fact that, all over the earth wherever we find astrology, the stars have essentially the same meaning. ~Carl Jung, ETH, Page 225.

Psychology did not suddenly spring into existence; one could say that it is as old as civilization itself. The ancient science of astrology, which has always appeared in the wake of culture all over the world, is a kind of psychology and alchemy is another unconscious form. ~Carl Jung, ETH Lecture I, Page 11.

His [Jung’s] impatience was due not only to his temperament – astrologically he was a Leo – but also to his extreme sensitivity, which both enriched and burdened his life. ~Aniela Jaffe, Last Years, Pages 114-115.

Astrology, like the collective unconscious with which psychology is concerned, consists of symbolic configurations: The “planets” are the gods, symbols of the powers of the unconscious. ~Carl Jung, Letters Vol. II, Page 175.

Astrology is not a mantic method but appears to be based on proton radiation (from the sun). ~Carl Jung, Letters Vol. II, Pages 22-23.

“Astrology” is another of those “random phenomena” wiped off the desk by the idol of the average, which everybody believes to be reality itself while it is a mere abstract. ~Carl Jung, Letters Vol. II, Pages 230-232.

All the grapes of the same site produce about the same wine. This is the truth stated by astrology and experience since time immemorial. ~Carl Jung, Letters Vol. II, Pages 353-355.

Sitting in the central mussel-shell, we are the “sons of the mother.” Hence the old astrological tradition says that our zodiacal sign is Virgo. However, there is no unanimity on this score, since the other version says that our sign is Taurus. It is a virile, creative sign, but earthly like Virgo. ~Carl Jung, Letters Vol. II, Pages 418-420

The fact, however, is that our whole astrological determination of time does not correspond to any actual constellation in the heavens because the vernal equinox has long since moved out of Aries into Pisces and from the time of Hipparchus has been artificially set at 0° Aries. ~Carl Jung, Letters Vol. II, Page 428-430.

Consequently the correlations with the planetary houses are purely fictitious, and this rules out the possibility of a causal connection with the actual positions of the stars, so that the astrological determination of time is purely symbolic. ~Carl Jung, Letters Vol. II, Page 428-430.

Astrology differs very much from alchemy, as its historical literature consists merely of different methods of casting a horoscope and of interpretation, and not of philosophical texts as is the case in alchemy. ~Carl Jung, Letters Vol. II, Pages 463-464

Astrology is a naively projected psychology in which the different attitudes and temperaments of man are represented as gods and identified with planets and zodiacal constellations. ~Carl Jung, Letters Vol. II, Pages 463-464

The experiment [Astrology] is most suggestive to a versatile mind, unreliable in the hands of the unimaginative, and dangerous in the hands of a fool, as those intuitive methods always are. ~Carl Jung, Letters Vol. II, Pages 463-464

Astrological “truths” as statistical results are questionable or even unlikely. ~Carl Jung, Letters Vol. II, Pages 463-464

The [astrological] superstitious use (prediction of the future or statement of facts beyond psychological possibilities) is false. ~Carl Jung, Letters Vol. II, Pages 463-464

There is no psychological exposition of astrology yet, on account of the fact that the empirical foundation in the sense of a science has not yet been laid. ~Carl Jung, Letters Vol. II, Pages 463-464

Undoubtedly astrology today is flourishing as never before in the past, but it is still most unsatisfactorily explored despite very frequent use. It is an apt tool only when used intelligently. ~Carl Jung, Letters Vol. II, Pages 463-464

The starry vault of heaven is in truth the open book of cosmic projection, in which are reflected the mythologems, i.e., the archetypes. In this vision astrology and alchemy, the two classical functionaries of the psychology of the collective unconscious, join hands. ~Carl Jung, CW 8, Page 195, Para 392.

The great astrological periods do exist. Taurus and Gemini were prehistoric periods, we don’t know much about them. But Aries the Ram is closer; Alexander the Great was one of its manifestations. ~Carl Jung, C.G. Jung Speaking: Interviews and Encounters, Pages 410-423

At breakfast he [Jung] spoke of astrology (one of his daughters is interested in it), and of a German book in which he is criticised for giving support to horoscopes. ~E.A. Bennet, Meetings with Jung, Page 91

This man also asked C.G. if he believed in astrology because he had mentioned it; but, said C.G., it is not necessary to ‘believe’ in such concepts – he simply observes that they are sometimes relevant. ~E.A. Bennet, Meetings with Jung, Page 102

And now we are coming to the end of the Pisces era, as was foretold nearly two thousand years ago by the Arabian astrologer Albumasar. The pre-Christian time was Aries. ~Carl Jung, Meetings with Jung, Page 302

The fact that astrology nevertheless yields valid results proves that it is not the apparent positions of the stars which work, but rather the times which are measured or determined by arbitrarily named stellar positions. ~Carl Jung, Letters Vol. I, Pages 138-139

“The stars of thine own fate lie in thy breast,” says Seni to Wallenstein—a dictum that should satisfy all astrologers if we knew even a little about the secrets of the heart. But for this, so far, men have had little understanding. Nor would I dare to assert that things are any better today. ~Carl Jung, CW 10, Para 9