A lie should be trampled on and extinguished wherever found. Carlyle.
A lie which is all a lie may be met and fought with outright / But a lie which is part a truth is a harder matter to fight. Tennyson.
A life that is worth writing at all is worth 30 writing minutely. Longfellow.
A light heart lives long. Pr.
Alii sementem faciunt, alii metentem—Some do the sowing, others the reaping.
Aliis lætus, sapiens sibi—Cheerful for others, wise for himself. Pr.
A l'impossible nul n'est tenu—No one can be held bound to do what is impossible. Fr. Pr.
A l'improviste—Unawares. Fr. 35
Aliorum medicus, ipse ulceribus scates—A physician to others, while you yourself are full of ulcers.
Alio sub sole—Under another sky (lit. sun).