Quotation, like much better things, has its abuses. One may quote till one compiles. The ancient lawyers used to quote at the bar till they had stagnated their own cause. – Isaac D’Israeli, “Quotation,” A Second Series of Curiosities of Literature
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