"Holiness begins in our minds and works out to our actions. That being true, what we allow to enter our minds is critically important. The television programs we watch, the movies we may attend, the books and magazines we read, the music we listen to, and the conversations we have all affect our minds. We need to evaluate the effects of these avenues honestly, using Philippians 4:8 as a standard. Are the thought stimulated by these various avenues true? Are they pure? Lovely? Admirable, excellent, or praiseworthy?"
Jerry Bridges - The Pursuit of Holiness p. 117