X, 27, as translated in Theology and Discovery: Essays in honor of Karl Rahner, S.J. (1980) edited by William J. Kelly 
Variant translations: 
So late I loved you, O Beauty ever ancient and ever new! So late I loved you! 
The Ethics of Modernism: Moral Ideas in Yeats, Eliot, Joyce, Woolf, and Beckett (2007), by Lee Oser, p. 29 
Too late I loved you, O Beauty ever ancient and ever new! Too late I loved you! And, behold, you were within me, and I out of myself, and there I searched for you. 
Introduction to a Philosophy of Religion (1970) by Alice Von Hildebrand 
Confessions (c. 397)