Scarce any great genius is mentioned in antiquity, who is not celebrated for this talent; and Cicero enumerates it among the other sublime qualities of Caesar himself. [Footnote: Fruit in Illo Ingenium, ratio, memoria, literae, cura, cogitatio, diligentia &c.
 David Hume, An Enquiry Concerning the Principles of Morals (1751). copy citation

Context

“But in ancient times, when no man could make a figure without the talent of speaking, and when the audience were too delicate to bear such crude, undigested harangues as our extemporary orators offer to public assemblies; the faculty of memory was then of the utmost consequence, and was accordingly much more valued than at present. Scarce any great genius is mentioned in antiquity, who is not celebrated for this talent; and Cicero enumerates it among the other sublime qualities of Caesar himself. [Footnote: Fruit in Illo Ingenium, ratio, memoria, literae, cura, cogitatio, diligentia &c. Phillip. 2.] .
Particular customs and manners alter the usefulness of qualities: they also alter their merit. Particular situations and accidents have, in some degree, the same influence. He will always be more esteemed, who possesses those talents and accomplishments, which suit his station and profession, than he whom fortune has misplaced in the part which she has assigned him.” source