"A politician is an arse upon which everyone has sat except a man"

This quote by e.e. cummings is an amusing critique of political leaders, suggesting that they are typically seen as doing not have integrity and a backbone. Everyone has metaphorically "sat upon" politicians, indicating they have been subjected to the desires and needs of a range of individuals and groups. However, the phrase "other than a man" indicates that there is some idealized figure who is the exception to this guideline, someone who is not quickly swayed or influenced by others. It can be translated as a commentary on the importance of independence and remaining real to oneself.