After I gave my alumnus presentation to a graduate school reunion last year, the dean, possibly vexed by the new things I shared, kept asking me what I learned from my studies in school.

I wanted to tell him that, after one graduates from school, one continues learning, and that new learning is always in combination with old learning, so that old learning is never the same.

But, of course, I didn't say that. I said something conservative to pacify him.