They that desire to excel in too many matters, out of levity and vain glory, are ever envious. For they… — Francis Bacon

They that desire to excel in too many matters, out of levity and vain glory, are ever envious. For they cannot want work; it being impossible, but many, in some one of those things, should surpass them. Which was the character of Adrian the Emperor; that mortally envied poets, and painters, and artificers, in works wherein he had a vein to excel.

Source: Wikiquote · CC BY-SA 4.0