Yeah I watched the one about best student is one who is teaching. Which at first I found perplexing but then I thought that society is essentially an existence of mirrors reflecting neck to each other.

We see ourselves best through others.
Through that we discover our place in society and also contribute to the evolution of it.

In regards to the broader picture of his talk though, it's beyond my scope but I enjoy watching 'old world' intellects. They used vocabulary much more naturally and had no self correction that we know today in mainstream.. due to PC dominance.