What I am curious,about ..maybe a Catholic can tell me ..what does,this,Catholic writer mean by ILLICIT USE,OF NFP..I thought this,was an approved method of family planning .
NFP is licit. But the reasons one may use it, may be illicit. In this case, I think the writer is trying to say that saving money for college is an illicit reason.(I don't know for sure if this is true or not, but seems to be central in his article.)