"The problem with legalists is that not enough people have confronted them and told them to get lost. Those are strong words, but I don't mess with legalism anymore. I'm 72 years old; what have I got to lose? Seriously, I used to kowtow to legalists, but they're dangerous. They are grace-killers. They'll drive off every new Christian you bring to church. They are enemies of the faith. Other than that, I don't have any opinion!
So, if I am trying to force my personal list of no-no's on you and make you feel guilty if you don't join me, then I'm out of line and I need to be told that."
Chuck Swindoll (via Ed Stetzer)
How do you know if you are a legalist? Have a look here