He who loses an opportunity is like the man who lets a bird fly from his hand, for he will never recover it.
John of the CrossNever listen to accounts of the frailty of others; and if anyone should complain to you of another, humbly ask him not to speak about him at all.
John of the CrossFor true devotion must issue from the heart, and consist in the truth and substances alone of what is represented by spiritual things; all the rest is affection and attachment proceeding from imperfection; and in order that one may pass to any kind of perfection it is necessary for such desires to be killed.
John of the Cross