More Than a Curious Mind

Jesus said, "Let the little children come to me, and do not hinder them, for the kingdom of heaven belongs to such as these." - Matthew 19:14 (NIV)

In the French comedy/drama film "Le Papillon" (2002), Elsa, the eight-year old little girl, and Julien, the grandfatherly entomologist, sang a charming and endearing song. The theme song, in fact. It was a duet about the circle of life and the rhythm of the universe. Of the twenty or so questions and answers exchanged between the two souls, only one question was asked three times.

Elsa asked three times in the duet this question:
Pourquoi le Diable et le Bon Dieu?
(Why is there the Devil and the (Good) God?)

Three times Julien gave the same answer:
C’est pour faire parler les curieux.
(It gives the curious mind something to talk about.)

One could speculate until the cows came home why this question and the response scripted three times for the duet. If you were Julien, or if you could alter the answer, how would you respond what Elsa thought was the most important question of all? The answer has to be short like the one delivered by Julien.

My response:
Evoluer dans bon, le mal ne peut pas.
(Evil cannot evolve into Good)