Donald Grey Barnhouse in the context of the tension between what Christians are supposed to feel about engaging the culture and being faithful:
"There are so many Christians who are narrow and cantankerous because they have been giving up things instead of getting Christ. They have gone at the things from the wrong end. Look out among the people you know as Christians and you will discover two sorts. One rubs you the wrong way, the other fills you with admiration. One of them boasts that he doesn't do this and doesn't do that until you think that failing to do certain things is the whole of his religion. Those to whom he talks want to go out and do the very things he does not do as a sort of reaction against that in his life which is offensive.
The other Christian strikes you as being a holy person. You do not expect him to do certain things because you rather feel that he is possessed by higher motives. He has been in the presence of the Lord and is so filled with that presence that he draws you to Christ." Read More.