Agree, trying to narrow down to one is always an exercise in futility and a non-starter.
Two of my favorites over the years have been "The Time Falling Bodies Take to Light: Mythology, Sexuality and the Origins of Culture" by William Irwin Thompson and "Four Arguments for the Elimination of Television" by Jerry Mander, just off the top of my head.
Those are from years ago -- another more recent is "Lies My Teacher Told Me" by James Loewen.
Intelligent choice--between 1776 Americanism and conflicting Isms (chiefly Socialism in the USA today)--requires primarily thorough knowledge of these Principles.
The book is the essential tool for all who wish to be worthy trustees for today’s children and future generations of their just heritage: this Ideal, its eternal values and the supporting Constitution, as The Founders intended. They believed to default about this is to betray. (emphasis the author's)
The Author's estate has granted permission for the publication to be made available exclusively for public reading here - The American Ideal of 1776 - A 1765 Call to Action--"Educate Young and Old: For Liberty"--As Timely Today as When Originally Made.
Very hard to narrow down to just a few authors let alone one. Larry Niven, JRR Tolkien - read the LOTR trilogy every year or two, Stephen Donaldson (took my moniker from a minor character of his), Robert Heinlein, Isaac Asimov, Frank Herbert, Samuel Clemens, Arthur Conan Doyle, Jules Verne. Listing these few make me think of dozens more.