a double-edged sword

something that causes both advantages and problems His great intelligence was a real double-edged sword because he never felt he could communicate with ordinary people.

Common Names:

Name	Pronounced	Usage
Tarik	-	Bosnian, Arabic
Achilleus	-	Greek Mythology
Cairbre	KAHR-bra	Irish, Scottish
AmÉRico	ah-ME-ree-ko (Spanish)	Spanish, Portuguese
Hanne (1)	HAN-ne (Danish), HAHN-ne (Norwegian), HAH-nə (German), HAHN-nə (Dutch)	Danish, Norwegian, German, Dutch
Fern	FURN	English