Jimmy Kimmel could learn how to disagree without being so disagreeable from the comedian who launched late-night television.

Letters from “The Tonight Show” founding host Steve Allen I discovered in a warehouse during research for “ The Man Who Invented Conservatism: The Unlikely Life of Frank S. Meyer ” illustrate his passion for dialogue with conservatives rather than the disparagement Kimmel so relishes.

Allen pioneered the “man in the street” interviews Kimmel’s show repackages as “Pedestrian Question.”

And, like Kimmel, Allen supported the Democratic Party and progressive causes.

Unlike Kimmel, he cultivated friendships with Republicans. 4

He married one in actress Jayne Meadows.

In Charlie Kirk fashion, he debated William F. Buckley on campus, which led to them sharing c

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