an ordinary person cannot understand the ambitions of a great man

talking about oneself (especially, when the audience is not interested)

(Internet slang, derogatory) talking about oneself whenever possible; self-centered

even if one says

big, large, great

how, why

talk about, tell, narrate / recite / show that there was something

oneself / first-person pronoun: I, me (often shows the speaker's lower position in a hierarchy than the addressee) / (Kansai) you

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend