You start with the intelligence you have. You will never have more than you started with.
You may augment that intelligence with cleverness, but cleverness ultimately turns out to be a cul-de-sac.
With the coming of wisdom, cleverness is left behind.
And intelligence takes a back seat.
What you start with, gets you by, until you have something better.
The same could be said of ego.
Everybody has to start somewhere, but it is probably better not to camp permanently where you started.