Translations for ecstasy in French

Here are paragraphs from public domain books translated:

The very next day we did actually make our start upon this remarkable expedition. We found that all our possessions fitted very easily into the two canoes, and we divided our personnel, six in each, taking the obvious precaution in the interests of peace of putting one Professor into each canoe. Personally, I was with Challenger, who was in a beatific humour, moving about as one in a silent ecstasy and beaming benevolence from every feature. I have had some experience of him in other moods, however, and shall be the less surprised when the thunderstorms suddenly come up amidst the sunshine. If it is impossible to be at your ease, it is equally impossible to be dull in his company, for one is always in a state of half-tremulous doubt as to what sudden turn his formidable temper may take.

Le jour du lendemain marqua vraiment dans notre expédition une date décisive. Tout notre bagage tenait sans peine dans les deux canots. Les professeurs étant, bien entendu, séparés. Personnellement, je me trouvais avec Challenger : il semblait en état de béatitude ; il se mouvait comme dans une extase silencieuse ; ses traits respiraient la bienveillance. Je le connaissais sous d’autres aspects et m’étonnerais d’autant moins quand viendraient à éclater, dans un ciel serein, de brusques orages. Avec lui, on ne peut ni se sentir tranquille ni s’ennuyer ; on vit dans l’attente des sautes d’humeur.

The Lost World, by Arthur Conan Doyle

Le Monde perdu, de Arthur Conan Doyle