It was really funny the first couple years after graduation because he really couldn't speak much English. He would just sit in the back of the teachers office and wait at the table until I finished my work. I would see him smiling. He didn't tell me that the reason he visited me was because I was there for him when his mother passed away. It took him a couple years. I think he practiced the expression a couple times before he came.
As for the analogy of influence to yeast in bread that is an ancient analogy I can take no credit for. But it would taste nice in !PIZZA
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