MERCURY IN THE FIFTH HOUSE centers the mind upon education, amusements, courtships and children. If Mercury is well-aspected by Saturn or Jupiter it gives depth to the mind and makes the person successful in enterprises connected with education, publishing or public amusements.
Good aspects from Mars or Venus give success in courtship but the adverse aspects of the planets make the person cruel; he is inconstant in affection toward those he professes to love, inclined to worry over affairs of his children, and superficial as a teacher. A good aspect from the Sun is an excellent indication of success in a government position, in an educational capacity.
Max Heindel