"They plead that they may live like worldlings, and my sad answer to them, when they crave for this liberty, is, 'Do it if you dare. It may not do you much hurt, for you are so bad already. Your cravings show how rotten your hearts are. If you have a hungering after such dog's meat, go, dogs, and eat the garbage. Worldly amusements are fit food for mere pretenders and hypocrites. If you were God's children you would loathe the very thought of the world's evil joys, and your question would not be, 'How far may we be like the world?' but your one cry would be, 'How far can we get away from the world? How much can we come out from it?'" (Source: How to Become Fishers of Men)
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