He who truly knows, knows that he knows not
Or
The more you know, the more you realize you don’t know.
But also, understanding that about yourself doesn’t take more knowledge or intelligence than you currently have. As another user (darkdarkhouse)^ posted, you can understand how the brain works and still not have all the knowledge in the world (hard drive with a map/directory of the hard drive on it).
Before the toilet, there was Little Big Skibidi
This will probably actually make it more confusing, but it’s still worth it, and it’s a Brazillion times better than skibidi toilet could ever dream…