Moon square Mercury or Moon opposite Mercury creates a synergy or conflict between the rational mind and gut instincts. The restlessness creates a very driven personality who is constantly in a state of flux like the tides washing in and out. This can make for a very creative, self-purifying individual with a huge need to communicate their fluctuating moods to a wider audience.
These people work well in the mass media and communications industries. The parents can be their mentors and teachers. Moon square or opposite Mercury may come from an intellectual family where heated debates are encouraged. Artistically this aspect shows itself as paying close attention to the small details of their subject whether it be clothing, architecture, visual appearance or behaviour.