On Wing, the first published work of fiction by the Slovak poet-philosopher Róbert Gál, is a constellation of hundreds of aphorisms, dreams, anecdotes, and inquiries, all written in a restless, searching, "improvisational" prose whose techniques reflect those of Bernhard, Nietzsche, and Kierkegaard, not to mention the saxophonist and composer John Zorn, who makes a brief cameo as a character.