In labouring to be concise, I become obscure.

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

Quidquid praecipies, esto brevis.

(Whatever advice you give, be brief.)

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

Brevity is a great charm of eloquence.

I have made this letter longer than usual, because I lack the time to make it short.