A bus driver was heading down a street in Colorado. He went right past a stop sign without stopping, he turned left where there was a "no left turn" sign, and he went the wrong way on a one-way street. Then he went on the left side of the road past a cop car. Still - he didn't break any traffic laws.
Why not?
I am a home of knowledge, both banal and profound.
In grand halls and small homes I can be found.
I am a home for things of many leaves,
but my many residents are not living trees.
What am I?