Vanity, showing off, is an attitude that reduces spirituality to a worldly thing, which is the worst sin that could be committed in the church.

Our vanity is hardest to wound precisely when our pride has just been wounded.

That little hypocrites and half-crazed people dare to imagine that on their account the laws of nature are constantly broken; such an enhancement of every kind of selfishness to infinity, to impudence, cannot be branded with sufficient contempt. And yet Christianity owes its triumph to this pitiable flattery of personal vanity.

A man given to pride is usually proud of the wrong thing.

If you let your head get too big, it'll break your neck.

Through your rags I see your vanity.