Leen wrote many books. Why? In many cases it started quite negative: attacks from Christians, like: Visual art is forbidden by God, Rockmusic is from the devil. A reborn Christian will not dance, etc. Most came from ignorant believers, some came from well educated pastors So how to answer those attacks? With harsh critique or with good studies, explaining the situations in love. And this was always done. What is the status after 40 years?