Of Augustine and asceticism:
The war upon life, the denial of nature, were exactly the things he had already found in the heathen world outside the Church, and had to renounce when he entered the Church.
-G.K. Chesterton, The Everlasting Man, pp. 225-226
This is still the case today. The world is full of ascetics, and a lot of its asceticism infests the church in strange forms.