When you're all alone, in the dark, you'll only ever be 5.
You may complicate things with masks you show to others with varying degrees of success. The things you know may vary your vocabulary and the way in which you present your arguments.
But in the end, when there's just you, you're 5.
Trust me, I know. I used to make a habit of just watching people when they thought they were in their own little world. In that half a second after they say something funny or provocative, then recoil. Thats when you see who they really are. While they're changing masks. While their mind is too busy playing through scenarios of what might come of their next sentence to worry about how people percieve them.
At their core, everyone is five years old.