sentences:  He refers to himself as "mad" but then acknowledges that he is probably merely "a little strange".His behaviour is obsessive, he has a propensity towards self-harm ("beating [his] head against [things])" and he garners some comfort from suicidal thoughts ("walking furious headlong into fire") but mainly from the inevitability that one day he will die anyway and all this will be over ("Oh I know I too shall cease to be as when I was not yet").This evokes one of the central themes of all Beckett's work