"A falling star has brought the chaos. The throne of fate has lost its master. The nonbeliever who walks in light and darkness will make his debut." In this magic world, knowledge is power.
In fact, at the very beginning, before he arrived at No. 116 Gesu District, Clown did consider the possibility that Professor and Lucien Evans would work together to frame him, say, Lucien Evans would pretended to be severely injured by him, and then the princess and Camil would arrive right on time and stop him. Then he would be caught for sure, or even killed right on the spot.