What Uncle Joe said is:

Stay hungry, stay stupid.

In terms of the scene of the Stanford speech, it is more accurate:

Keep the hunger (feeling).

Continue to be stupid.

Keeping hunger (feeling): It means that when a person is hungry, his goals will be clear and his actions will be focused. All negative emotions will not affect his ability to achieve his goals. Frustration will only make him work harder to find a way. When eating, anger will make you take the initiative to find ways to fill your stomach, and will do everything you can to open up obstacles, because both psychologically and physically you can maintain this great momentum and focus on achieving your clear goals.

(There is nothing to seek knowledge here, it is just a state, what are you doing?)

Continue to be stupid (state): you are not afraid of exposing problems, not afraid of making a fool of yourself, Don’t be afraid of facing embarrassment or being considered ridiculous; make progress by correcting your stupidity, and achieve success by solving problems, just like the learning process, discover problems, acquire knowledge and experience through actions to solve problems.

(There is no question of modesty here. According to Uncle Qiao's state, you can be high-profile, blustering, and HI, but you have to admit when you are really stupid and you have to change it. Don't show off. Standing tall like Dana.

There is nothing if (as if) [oneself] is stupid [stupid])