Supposedly said in a interview on Larry King Live, probably paraphrasing the ideas of Byron (izquotes.com/quote/304207) and Twain (izquotes.com/quote/188080)
“Every moment of one's existence one is growing into more or retreating into less. One is always living a little more or dying a little bit.”
Conversations With Norman Mailer (1988 edition)
certain maxims of archy - archy and mehitabel (1927)
Bio: Decimus Iunius Iuvenalis, known in English as Juvenal, was a Roman poet active in the late 1st and early 2nd century AD, author of the Satires. The details of the author's life are unclear, although references within his text to known persons of the late 1st and early 2nd centuries AD fix his terminus post quem.