“There are two kinds of runners: those who run to clear their heads and those who run to think.” So posits a character in “Blind Runner,” a one-act drama by an Iranian writer and director, Amir Reza Koohestani. In the play’s North American premiere, now being staged at Brooklyn’s Saint Ann’s Warehouse, the line, like all the others, is spoken in Farsi, with English supertitles provided for those who don’t understand the Persian language.