‘‘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.