With Mercury in Cancer the thinking logical mind as represented by Mercury is expressed thrrough the emotional sign of Cancer. Thoughts and Emotions are inherently linked. A thought for these natives can instantly lead to deeply associated feelings and nostalgia. The problem that can occur with this combination is that thoughts may not be logical and can be unduly influenced by feelings. Often individuals with Mercury in Cancer focus their thoughts around the home and the family and their pets. They may have an interest in history and old photos or movies.