A quote from St. Teresa of Avila, Way of Perfection - Chapter 28
And now let us imagine that we have within us a palace of priceless worth, built entirely of gold and precious stones -- a palace, in short, fit for so great a Lord. Imagine that it is partly your doing that this palace should be what it is -- and this is really true, for there is no building so beautiful as a soul that is pure and full of virtues, and, the greater these virtues are, the more brilliantly do the stones shine. Imagine that within the palace dwells this great King, Who has vouchsafed to become your Father and Who is seated upon a throne of supreme price -- namely, your heart.