takes one to know one

(It) takes one to know one.

Inf. You are one also. A: You are a stupid oaf. B: So are you. It takes one to know one.

Name	Pronounced	Usage
Zornitsa	-	Bulgarian
Lucjusz	LUWTS-yuwsh	Polish
ÓEngus	-	Ancient Irish, Irish Mythology
JosÉ	ho-SE (Spanish), zhoo-ZE (Portuguese)	Spanish, Portuguese
Garden	-	Basque
Emlyn	-	Welsh