Great story via Chabad.
"Shlomo Lichtenberg’s story begins in Bucharest, Rumania, where he was born in
1929. Together with his family, he relocated to Argentina as a child."
“My Jewish education was very limited,” he recalls.
“I spent one year
studying with a Russian-born teacher in preparation for my Bar Mitzvah—and that was it.”
"When asked about the stamina needed to keep a rigorous yeshivah
schedule that entails learning from early morning to deep into the
evening, he explains:
"I grew up with anti-Semitism in Argentina, but I
was never afraid of a challenge, and that is how I am alive now at 85."
"Everybody asks how I am so energetic, and I reply that I have a young
soul and am connected to G‑d.”