And he reflected, with his eyes on the dark blue square that the window framed in the sky.
He turned the same idea over in his head until daybreak.

Previous to the visit of Therese, the idea of murdering Camille had not occurred to him.
He had spoken of the death of this man, urged to do so by the facts, irritated at the thought that he would be unable to meet his sweetheart any more.

And it was thus that a new corner of his unconscious nature came to be revealed.
Now that he was more calm, alone in the middle of the peaceful night, he studied the murder.

The idea of death, blurted out in despair between a couple of kisses, returned implacable and keen.

Racked by insomnia, and unnerved by the visit of Therese, he calculated the disadvantages and the advantages of his becoming an assassin.
All his interests urged him to commit the crime.