These arms must appear on our banners and at all costs we must keep this rule as regards our house, our clothes, our speech, and (which is much more important) our thoughts. So long as this is done, there need be no fear, with the help of God, that religious observances in this house will decline, for, as Saint Claire said, the walls of poverty are very strong. It was with these walls she said, and with those of humility, that she wished to surround her convents, and assuredly, if the rule of poverty is truly kept, both chastity and all the other virtues are fortified much better than by the most sumptuous edifices. Have a care to this, for the love of God; and this I beg of you by His Blood.
From the book: The Way Of Perfection
Saint Teresa of Avila