Quidquid praecipies, esto brevis.

(Whatever advice you give, be brief.)

In labouring to be concise, I become obscure.

There is need of brevity, that the thought may run on

A good scare is worth more than good advice.

Good advice is one of those injuries which a good man ought, if possible, to forgive, but at all events to forget at once

Brevity is the best recommendation of speech, whether in a senator or an orator.