In one, Selaron thanked a friend for helping out with the tiling. Elsewhere, proud mother Jandira announced the birth of her son Bruno. In one tile, Selaron apologized to his landlady, Dona Elena, for having neglected to pay rent during the years he spent working on the staircase.
"I hope you understand," he pleaded in a piece decorated with the omnipresent pregnant woman.
Selaron meant the work to last a lifetime.
"I will only end this mad and singular dream on the last day of my life," he wrote on the wall.
Several steps above, an anonymous contributor answered, in simple handwriting on a plain tile painted in the green and yellow of the Brazilian flag: "Obrigado, Selaron."
Thank you, Selaron.