You could say "el dorado," which could be translated as "the golden." Technically, "dorado" refers to the color of gold, so it could also mean "the gilded" or "the gold-colored," but I think it's the phrase you're looking for.
Egomania is basically intolerably self-centred. In a more technical sense, it's an obsession -- an obsessive preoccupation with one's own self, usually in the form of following own impulses and have delusions of grandeur.
Megalomania is a rather loose term, and usually means have delusional fantasies of omnipotence (having unlimited or very great power, whatever 'power' might mean to that person). Interestingly, megalomania was the standard term for narcissistic personality disorder before the 1960s (so far as I recall from my psychology degree over 30 years ago).
Answer:
Napoleon was a great leader with great ideas
Homo Agricola ego sum
Nos vates
est aqua in mari
Et in Italia
Et mulieres
In domo in domum
you are a nauta
Ea puella est
Florida est paeninsula
Sunt insulae
