We can describe a mystic in three ways. He or she may be any one or all three. For the present, we shall simply explain the quality of these persons that in the Catholic vocabulary are called Mystic.
Mystics are holy/spiritual persons who have reached Spiritual perfection. They are no longer beginners or proficients. They may of course still grow in virtue. Their main concern though is to remain united with God.
Mystics are gifted contemplatives. We must carefully note that a person can be very holy and pleasing to God without being a gifted contemplative. On this level mystics possess what is called infused contemplation. The most authoritative description of a mystic as a gifted contemplative is given by St. Teresa of Avila in her masterful work, The Interior Castle. The description is given in the 4th to the 7th mansions of St. Teresa’s description of infused contemplation.
Mystics may finally be persons who manifest charismatic phenomena. Such phenomena do not occur in the normal development of the spiritual life. They are called charisms because they are given by God for the benefit of others than the mystic. In other words these phenomena are apostolic by nature. They may be true miracles such as private revelations, divine locutions, the stigmata, speaking in tongues, levitation, transportation through space, knowing events at a great distance of space and the gift of prophecy.
It is here, especially, that we must carefully distinguish between the mystic and these phenomena. It does not follow that because a person has these phenomenal gifts that he or she is necessarily either very holy or even gifted with infused contemplation. The single most important thing to remember about these charismatic gifts is that they are not for the benefit of the person who possesses them. If genuine, such charismata are always for the benefit of others, their souls, their lives and their eternal slumber.
With love,
Kate