Mercury in Cancer
Mercury in the sign of Cancer. This sign is hostile to Mercury, which is expressed in an emotional character with an inclination to risk; it is hard to live with such a person. Such people quarrel with their friends and relatives, often change their dwelling, earn their living by transporting goods, and success in business usually accompanies them. (Tom Hopke)
Mercury in Cancer: Creative thinking, strongly concentrated on his own advantage, tactful speech, brisk; he knows how to speak so that others will agree with his opinion. His opinion changes constantly, whenever it is advantageous; bad relations with relatives, a connection with foreign countries, an excellent memory. Dissatisfied, hot-tempered, hypersexual, losses because of women, especially when it is under the aspect of the Moon; an inclination to alcoholism for a Capricorn lagna, a good placement for a Pisces lagna. An aspect of Jupiter upon Mercury gives good results. (Mahesh Dharmadasa)
Mercury in Cancer: a tenacious memory, sensuousness, the makings of a diplomat, inclined to heed the opinion of those around him. (Sri Govind Swarup Agarwal)
Mercury in Cancer — wealth thanks to water, hates his relatives. (Varahamihira)
Not a very good placement for Mercury, because it is very hostile towards the Moon. Mercury in Cancer, even in the 1st house, without good aspects gives an excessive interest in knowledge. But the strength of Mercury may be suppressed by the emotions; the emotions may prevail over the intellect.
Each sign is responsible for some part of the body: Aries for the head, Taurus for the neck, Gemini for the arms and shoulders. Cancer is responsible for the chest. If Mercury is in Cancer, and if the person takes everything too emotionally, then the blow falls on the lungs or the heart; he may suffer a heart attack.
Since this is the 4th house, there may be problems with friends and with one's circle. Such a person may change his dwelling more often than others; as a rule such people move several times in their lives.
Among the positive characteristics: such a person has flexible thinking, he can perceive details very well and synthesise them, penetrate to the essence of things and single out the main point from a flow of speeches and statements.
Such people need to work on their speech. They are not always good orators; it is hard for them to express their thoughts; their speech may be either too emotional or unintelligible: «he talks and talks and talks and it is not clear about what».
The emotions may be stronger than reason. The intellect is suppressed by the emotions. One must work on becoming aware of the emotions. It is considered that these people have a good memory. They are directed towards family and home. They take what is said to them very personally.
«Mercury in Cancer in the 2nd house; I simply cannot do without studying. All the time I want movement and to move house, otherwise it is boring. I really do have to control my emotions».
(Rami Blekt)
«Jataka Bharanam»
Results of the placement of Mercury in Cancer
19.40. If Buddha is placed in Karka, then the person will possess immoral inclinations, will love to listen to songs and legends, will be a favourite of the king, will go abroad and will engage excessively in sexual relations.
Commentary: The sign of Cancer is considered hostile for Mercury. The point is that Cancer represents the instincts (emotions, feelings), while Mercury represents rationality (reason, logic, intellect). But as a rule the intellect is here defeated by the heart. Therefore it is probable that such a person will have an immoral character and an excessive fondness for sexual relations.
18:176. Results of the aspect of the Sun upon Mercury in Cancer: If Surya aspects Buddha placed in the Rashi Karka, then the person will lose respect because of his wife, will be exceedingly weak because of excessive expenditure and will bring many various troubles.
18:177. Results of the aspect of the Moon upon Mercury in Cancer: If Buddha, placed in Karka, is aspected by Chandra, then the person will be skilful in cleaning clothes, in collecting precious stones, in ways of building houses, in making garlands.
18:178. Results of the aspect of Mars upon Mercury in Cancer: If Buddha in Karka receives the aspect of Mangala, then the person will have a small knowledge of the Shastras, he will always be occupied with accumulating wealth, will be courageous, will speak softly and will be skilful in creating artificial goods.
18:179. Results of the aspect of Jupiter upon Mercury in Cancer: If Buddha, placed in Karka, is aspected by Guru, then the person will be a scholar, skilful in conduct, fortunate, truthful in speech and will have recognition from the king.
18:180. Results of the aspect of Venus upon Mercury in Cancer: If Buddha, being in Karka, is aspected by Shukra, then the person will speak melodiously, will possess a beautiful body, and will be skilful in music and in playing musical instruments.
18:181. Results of the aspect of Saturn upon Mercury in Cancer: If Buddha, placed in Karka, is aspected by Shani, then the person will be devoid of virtues, abandoned by those close to him, will speak falsehood, will be hypocritical and will not feel obliged to those who have done him good.



