Love is never something ready made, something merely ‘given’ to man and woman, it is always at the same time a ‘task’ which they are set. Love should be seen as something which in a sense never ‘is’ but is always only ‘becoming’, and what it becomes depends upon the contribution of both persons and the depth of their commitment. (p. 139)
—from Love and Responsibility by Karol Wojtyla (Saint John Paul II)
—The 30 page document John Paul II on Love and Responsibility is a good introduction to the book Love and Responsibility. It is mostly made up of excerpts from the book, but it also includes excerpts from other official and personal writings on love by Saint John Paul II.