Veritas "Truth" personified, a daughter of Saturn and the mother of Virtue. It was believed that she hid in the bottom of a well because she was so elusive. The Roman equivalent of the Greek Aletheia.
From Smith's Dictionary of Greek and Roman Biography and MythologyFrom The Symposium by Plato
All this may be told without shame to any one. But what follows I could hardly tell you if I were sober. Yet as the proverb says, ‘In vino veritas,’ whether with boys, or without them (In allusion to two proverbs.); and therefore I must speak. Nor, again, should I be justified in concealing the lofty actions of Socrates when I come to praise him.
From Sartor Resartus By Thomas Carlyle
But what then? Amicus Plato, magis amica veritas; Teufelsdröckh is our friend, Truth is our divinity. In our historical and critical capacity, we hope we are strangers to all the world; have feud or favour with no one,—save indeed the Devil, with whom, as with the Prince of Lies and Darkness, we do at all times wage internecine war. This assurance, at an epoch when puffery and quackery have reached a height unexampled in the annals of mankind, and even English Editors, like Chinese Shopkeepers, must write on their door-lintels No cheating here,—we thought it good to premise.