(something) speaks for (itself)

something does not need explanation.

Her behavior speaks for itself, and it doesn't matter what anyone else thinks about it.

Is the experiment a success? I think the numbers speak for themselves.

Usage notes: often used in the form let something speak for itself:

The record company didn't push her album, they simply put it out and let the music speak for itself.

Obj. was given as "itself/themselves," but when we use "yourself," we don't also give "yourselves," not to mention "herself," etc. as under "spectacle" below, so I don't see why we must give the plural form here.--SL, 1/03

• need head examined
• need head examining
• need I say more
• needle in a haystack
• needless to say
• need like a hole in the head
• need like need a hole in the head
• need like you need a hole in the head
• needs must
• need something like a hole in the head
• need something like need a hole in the head
• need something like you need a hole in the head
• need to have head examined
• need to have your head examined
• need your head examined
• need your head examining
• neither here nor there
• nerves of steel
• nest egg
• never a dull moment
• never darken door again
• never darken your door again
• never hear the end of it.
• never hear the end of it
• never live down