In Close Encounters of the Third Kind (1977), Neary is being interrogated after his capture near Devils Tower; he is in a small room with Lacombe & Laughlin.

My question relates to part of the scene immediately after when Neary says:

"That's not crazy, is it?"

Lacombe & Laughlin confer over something but the entire dialog is in French and a subtitled translation is not available.

Would someone please provide a translation of the french dialog in this scene?