When a person has his natal Mercury in the 9th house of the chart, the placement makes him be of a rather high intellect, being capable of viewing the big picture. His mind is very broad; on the other hand, he can lack the ability to see the details thoroughly. The 9th house rules everything that is foreign, and Mercury placed here will definitely make the native learn foreign languages and have a rather different mentality and philosophy than the rest of people residing in his homeland. He will also be influenced by foreign cultures and religions, mixing them with the ones that he learned as a child and creating his personal one.
This planet in House 9 is particularly well placed since it is also related to the mind and the intellect, and there can therefore be a great need for knowledge, to learn, to do long studies, to discover, to improve, etc… with also a stronger interest in the philosophical and cultural fields, and often in foreign languages. Mercury can here help to surpass oneself in terms of evolution, through intellect, knowledge, foreign travel, etc…
The good aspects of Pluto will strengthen the aptitude for research and diagnosis, those of Neptune will push more towards the inspiration and the attraction of the esoteric or religious fields, those of Uranus will give creativity and skill in understanding, those of Saturn will bring depth of mind and the ability to think, those of Jupiter will give know-how and good judgment, those of Mars a stronger practical sense, those of Venus the ability to convince by speech, those of the Moon the sense of adaptation.
The difficult aspects of Pluto will make you more polemical and intolerant or a little mentally rebellious, those of Neptune will provoke utopia and the attraction for all that is irrational, those of Uranus too much nervousness and difficulty concentrating, those of Saturn a lack of adaptation, those of Jupiter will cause errors of appreciation, those of Mars a lack of patience, those of the Moon a difficulty in synthesizing on the intellectual level.
As always, we must synthesize the aspects to Mercury taking into account the sign of Mercury and the 9th house which is the backdrop to the way this domain is experienced.
You are mentally flexible and adaptable with a keen interest in intellectual subjects, law, religion or philosophy. You are good at expressing what you think and what you believe in words. Maybe you like to travel and are curious about foreign cultures, which can be especially enriching for you. You have a gift for language learning and translation. They could be teachers or involved in education in some other way. There may be an interest in publishing or advertising.
Each planets have a different effect on you, depending on which house and sign they reside in. In order to find out where they are located in your natal chart, you can use our free birth chart generator. Also, examine the aspects that they form with other planets in your chart. You will understand a lot more about the detailed role that they have in your horoscope.