How we cite our quotes:
As if that blind rage has washed me clean, rid me of hope; for the first time, I that night alive with signs and stars, I opened myself to the gentle indifference of the world. Finding it so much life myself – so like a brother, really – I felt that I had been happy and that I was happy again. For everything to be consummated, for me to feel less alone, I had only to wish that there be a large crowd of spectators the day of my execution and that they greet me with cries of hate. (2.5.26)
Whereas earlier Meursault felt isolation from the world, he now feels kinship with it. Because he is indifferent, and so is the world, they find kinship in their indifference.