The poem "I Saw a Man Pursuing the Horizon" represents how futile it is to chase after an impossible dream. The horizon is constant and unattainable, much like this man's dream. The speaker is believed to be either a man trying to help the guy chasing the horizon, or he is a naysayer, someone who just wants the guy to give up on his dream. But as we all know, anyone who tells us we cannot do something is only going to force us to keep trying.