Mercury in Aquarius in 4th House

Unconventional in self-expression, Mercury in Aquarius natives enjoy breaking the rules. They are not necessarily loud or flamboyant people, but they often have a quiet way of stirring others up. These natives delight in exposing what they deem biases in others' way of thinking.
Very quick to contradict others, and to offer a different perspective, these natives enjoy intellectual debates. They're very quick and alert, and their powers of observation are particularly strong. They usually "win" debates. In fact, they're very interested in scoring intellectual points, which can be maddening to others at times!
Aquarius is an air sign, which is detached and intellectual by nature. It is also a fixed sign, so people born under Mercury in Aquarius often have an intellectual "agenda". They are even given to forcing their ideas on others. This apparent intellectual superiority complex can intimidate others at times.
On the other hand, Mercury in Aquarius people can make for delightful company. They usually have something interesting to say, and their perspective on issues can be delightfully unusual, quirky, and surprisingly insightful.
These individuals have unusual study habits. They generally are resistant to following schedules, even if they have a Capricorn Sun—and perhaps particularly so with a Pisces Sun sign. Although they are often surprisingly organized, their sense of order may not be entirely understandable to others.
These natives are often attracted to scientific and/or metaphysical pursuits. Anything that promises progress and advancement for mankind has special appeal. Their sense of humor is often well-developed and unique. Practical jokes and anything that shocks and stirs up others are especially appreciated by Mercury in Aquarius people.

Mercury in the 4th House
You like to be surrounded by books, records and other tools to help develop your mind. You are especially interested in subjects such as history that teach you about the past.
On the other hand, this position of Mercury directs your attention inside your own mind. You think about yourself a lot and try very hard to understand your feelings and emotions. You also like to discuss your feelings with other people, because you want them to understand you too. But be careful not to get too wrapped up in your own point of view.
Parents always have an influence on the way their children think, but your parents will have an even stronger effect than most. What you learn when you are young will stay with you forever.

*You have an introspective turn of mind and may enjoy keeping a journal or a record of your dreams and personal experiences, or learning about psychology, history, and the inner workings and emotional foundations of your own life. You are studious and something of a bookworm.

Mercury Conjunct Neptune
You have a very rich imagination, but you must learn to control it enough to understand what is real and what is not.
You have a very rich fantasy world, which seems very real to you, and in a way it is real, but not in a way that most others can accept.
You are also very sensitive to what is going on in other people's minds, even when they don't say a word. This may be confusing at first, because you don't know how you know something, and that makes others disbelieve you, even when you are right. Your intuition is very highly developed.

Mercury Square Ascendant
This aspect indicates that you have an active mind, and you enjoy talking about ideas with people and sharing their thinking. But you may find it difficult to reach agreements with others, because you state your own opinions so energetically, even forcibly, that you put people off. You must learn to control the way you express yourself somewhat.
Try to avoid talking simply for the sake of talk, and avoid gossip and rumor. These may seem entertaining, but they can work against your friendships. What you think of as light fun may be very serious to others.

Mercury Trine Saturn
You are careful and cautious, and you do everything in a very structured and organized way. You have discipline, which you need in order to get anything done.
Your view of life is practical. You want to know what good something is before you get involved with it. For this reason, you can take an idea, and make something real of it that others can see and appreciate.
You want to know the objective truth about the world, and you are willing to study hard to find it out. The only problem is that you may not be sensitive enough to the less concrete aspects of the world, such as other people's feelings or vague impressions that do have real meaning. In short, you may be too hard-headed to appreciate the lighter and more subtle side of life.

Mercury Sextile Pluto
You get totally involved in each new interest. Because you do not take any subject lightly, you learn a great deal about everything you study.
Fortunately this aspect helps you look at matters logically as well as feel them out intuitively. Thus you reach a higher level of understanding than most people.
This aspect favors careers in investigation, including criminal investigation and law enforcement; jobs that require ability in mechanics and repairing; and fields that require an understanding of human behavior. This aspect will help your career in another way, because you can convince people of your point of view without making them feel that you are pushing them around.