Yes, it’s MUCH easier to understand the first part of the above saying by Robert McCloskey.
Yet, I do like some negation cases! Especially double negation. It’s a fine way to hedge or downplay what you really think, like, “it’s not impossible,” “it’s not that I don’t like it…” Here, I do NOT refer to officialese or bureaucratese phrases like “not unless,” “not until” or “never without.” Or “don’t hesitate”:) They are “NO-NOs” (negation again?!)
Anyway, it is preferable to avoid negation (another negation case, which simply equals “use affirmative statements”:). Because positive sentences are so much easier to comprehend than negative ones. They are also easier to remember.
Affirmation and negation… Two sides of the same coin, actually.
Comparison is pervasive and persuasive in science.
It is the basis of human knowledge, true, but it’s also the beauty of vivid metaphors, e.g. half-baked ideas; a bed of roses; a thicket of thorns; a fountain of knowledge; brainchild …
And when something can’t be compared to anything else, it becomes unequalled; unrivaled; unparalleled; inimitable; matchless; one and only; one in a million; one of a kind / (the) only one; a class of its own; a class by itself; second to none; peerless; beyond compare… Unique.