Verdict
It is not in Augustine of Hippo's work
A modern attribution with no basis in the Augustinian corpus or the manuscript tradition; it circulates in quotation anthologies and travel advertising without reference to any work.
What they did say
Verified words of Augustine of Hippo
«You have made us for yourself, and our heart is restless until it rests in you.»
Confesiones I,1,1
«Late have I loved you, beauty so ancient and so new, late have I loved you! And see, you were within and I was outside, and there I sought you.»
Confesiones X,27,38
«You were more inward than my inmost self and higher than my highest.»
Confesiones III,6,11
