Churchill, perhaps:
“If you’re not a liberal at twenty you have no heart, if you’re not a conservative at forty you have no brain.”
A stupid quote, and not true.
In 1984 when Perry was signing up to become a Democrat leader and the rest of Texas was supporting Reagan, Perry was 34 years old, he was not a kid, in 1988 when he was fighting for Gore he was 38, in 2008 when he was fighting for Giuliani, he was almost 60 years old.