This one’s from Katherine Jean Lopez at Patheos. And she’s quoting Pope Benedict here.
A particularly dangerous phenomenon for faith has arisen in our times: indeed a form of atheism exists which we define, precisely, as “practical”, in which the truths of faith or religious rites are not denied but are merely deemed irrelevant to daily life, detached from life, pointless. So it is that people often believe in God in a superficial manner, and live “as though God did not exist” (etsi Deus non daretur). In the end, however, this way of life proves even more destructive because it leads to indifference to faith and to the question of God.