I always say your number of years in comedy is about your maturity level. When you're doing it ten years, you're like a 10-year-old. Fifteen, you're … - Jerry Seinfeld

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I always say your number of years in comedy is about your maturity level. When you're doing it ten years, you're like a 10-year-old. Fifteen, you're like a 15-year-old; you're start-- a slight bit of maturity. Twenty years, you're like-- kind of a grown-up, but still completely infantile.