talking

A close mouth catches no flies.

implies that

Better the foot slip than the tongue.

expresses that

Empty vessels make the the most sound (or noice).

suggests that

Fine words butter no parsnips.

indicates that

He cannot speak well that cannot hold his tongue.

in other words

He that talks much errs much.

also

To beat about the bush.

said when

Walls have ears.

means

Better out than in.

advices that

Back talk

states