Do not shun this maxim because it is common-place. On the contrary, take the closest heed of what observant men, who would probably like to show originality, are yet constrained to repeat. Therein lies the marrow of the wisdom of the world. – Arthur Helps, “Chapter IV,” Companions of My Solitude, 1851

Nevertheless, a maxim does not necessarily become a proverb. Many grubs never grow to butterflies; and a maxim is only a proverb in its caterpillar stage—a candidate for a wider sphere and longer flight than most are destined to attain. – “Proverbs Secular and Sacred,” The North British Review, February 1858

But, perhaps, the excellence of aphorisms consists not so much in the expression of some rare or abstruse sentiment, as in the comprehension of some obvious and useful truth in a few words. – Samuel Johnson, The Rambler, November 19, 1751

A case which commonly happens with us in London, as well as our Neighbours in Paris, where if a Witty Man starts a happy thought, a Million of sordid Imitators ride it to death. – Thomas Brown, Laconics: Or, New Maxims of State and Conversation