Mercury in the 4th House
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  This indicates a mental activity associated with nurturing, the home, and patriotism. 
  It may indicate that your need for affection and physical intimacy has been 
  suppressed in favor of rationality and reason. One of your parents, or both, was 
  either particularly expressive, eloquent and critical, or simply unreliable. Your 
  spiritual attitude may have been significantly influenced by your father. It is possible 
  that you moved house often at some stage. If Mercury in the fourth house has 
  challenging aspects from other planets, it is possible that domestic arguments and 
  aggravations play a large role both during childhood and later years.  
   
  Your sense of nurturing is likely to be strong, and you may have a strong domestic 
  bent. If Mercury is well-aspected by other planets, you may engage in home 
  improvements and you probably like to cook. You prefer to study and work at home, 
  and this may be very influential for any spiritual activity and education. Perhaps you 
  express yourself well among acquaintances, rather than among strangers or in a 
  large group. Your sense of patriotism will be reflected by Mercury's aspects and the 
  zodiac sign this planet is located in.