"I feel the gales that from ye blow."—Gray.
"Tyrants dread ye, lest your just decree Transfer the power and set the people free."—Prior.
Many of the great writers have played havoc with the adjective in the indiscriminate use of the degrees of comparison.
"Of two forms of the same word, use the fittest."—Morell.
The author here in trying to give good advice sets a bad example. He should have used the comparative degree, "Fitter."
Adjectives which have a comparative or superlative signification do not admit the addition of the words more, most, or the terminations, er, est, hence the following examples break this rule:
"Money is the most universal incitement of human misery."—Gibbon's Decline and Fall.
"The chiefest of which was known by the name of Archon among the Grecians."—Dryden's Life of Plutarch.
"The chiefest and largest are removed to certain magazines they call libraries."—Swift's Battle of the Books.
The two chiefest properties of air, its gravity and elastic force, have been discovered by mechanical experiments.—Arbuthno