This is the first biography I read of President Coolidge. It is very dry and academic in style, but I didn't mind.
I now believe that if any twentieth-century American president could be called a good man, it must have been Calvin Coolidge. He had possibly the most outwardly uninteresting and unappealing personality of any president, but who cares? because I believe he was more committed to leaving the American people alone, to not intruding in their everyday lives, than any president outside the Founding Fathers' generation. He was also probably the president most committed to fiscal discipline: every year of his one term saw the budget balanced; taxes were repeatedly cut, and Coolidge once made a speech about reducing pencil expenditures!
About his laconic and unsociable personality, there is a plausible theory in another bio I plan to read. Calvin Coolidge's younger son, Calvin Jr., died in 1924--the same year Coolidge was elected for his own term after replacing the deceased president Harding. Robert E. Gilbert believes that because of Calvin Jr.'s death, Calvin Sr. suffered from clinical depression throughout his term, which would explain his quiet, passive and often socially inept behavior.
I also plan to read Coolidge's autobiography, which he wrote not long after leaving office.