A real Centauröpart man, part horse's ass. A rough appraisal, but curiously true.

-Acheson, Dean Gooderham
  Of President  Johnson.13  Apr.

In psychoanalysis nothing is true except the exaggerations.

-Adorno,Theodor
  Negative Dialectics.

Rien n'est vrai que ce qu'on ne dit pas. Nothing is true except that which is unsaid.

-Anouilh,Jean
  Antigone.

The criterion which we use to test the genuineness of apparent statements of fact is the criterion of verifiability.We say that a sentence isfactually significant to any given person, if, and only if, he knows how to 44 verify the proposition which it purports to express ö that is, if he knows what observations would lead him, under certain conditions, to accept the proposition as being true, or reject it as being false.

-Ayer, SirAlfred Jules
  Language, Truth and Logic, ch.1

'I don't know they're true,' he said.'I believe them because it's fun to believe them.'

-Bach, Richard
  Illusions.

Quod enim mavult homo verum esse, id potius credit. For what a man would like to be true, that he more readily believes.

-Bacon, Francis,Viscount St Albans
  Novum Organum, bk.1, aphorism 49.

Be so true to thyself as thou be not false to others.

-Bacon, Francis,Viscount St Albans
  Essays, no.23,'Of  Wisdom for a Man's Self'.

Only reasoncan convinceus ofthosethreefundamental truths without a recognition of which there can be no effective liberty: that what we believe is not necessarily true; that what we like is not necessarily good; and that all questions are open.

-Bell, (Arthur) Clive Howard
  Civilization, ch.5.

Journalists saya thing that they know isn't true, in the hope that if they keep on saying it long enough it will be true.

-Bennett, (Enoch) Arnold
  The Title, act 2.

And is it true? And is it true, This most tremendous tale of all, Seen in a stained-glass window's hue, A Baby in an ox's stall? The Maker of the stars and sea Become a Child on earth for me?

-Betjeman, SirJohn
  A Few Late Chrysanthemums,'Christmas'.

God forbid: yea, let God be true, but every man a liar.

-Bible (NewTestament)
Romans 3:4.

Finally, brethren, whatsoever things are true, whatsoever things are honest, whatsoever things are just, whatsoever things are pure, whatsoever things are lovely, whatsoever things are of good report; if there be any virtue, and if there be any praise, thinkon these things.

-Bible (NewTestament)
Philippians 4:8.

And I saw heaven opened, and behold a white horse; and he that sat upon him was called Faithful and True, and in righteousness he doth judge and make war.

-Bible (NewTestament)
Revelation19:11.

Future, n.That periodoftimeinwhichouraffairsprosper, our friends are true and our happiness is assured.

-Bierce, Ambrose Gwinett
  The Cynic's Word Book. Retitled  The Devil's Dictionary (1911).

He said true things but called them by wrong names.

-Browning, Robert
  Men and Women,'Bishop Blougram's  Apology'.

What makes all doctrines plain and clear? About two hundred pounds a year. And that which was prov'd true before, Prove false again? Two hundred more.

-Butler, Samuel
  Hudibras, pt.3, canto1, l.1277^80.

Idon'tcarewhat anybodysaysabout measlong asit isn't true.

-Capote,Truman
Quoted in David Frost The Americans (1970),'When Does  A Writer Become  A Star'.

What I tell you three times is true.

-Dodgson
  The Hunting of the Snark,'Fit the First: The Landing'.

Je pouvais prendre pour re'  gle ge¤  ne¤  rale, que les choses que nous concevons fort clairement et fort distinctement sont toutes vraies. I could take it as a general rule that whatever we conceive very clearly and very distinctly is true.

-Descartes, Rene¤
  Discours de la me¤  thode (Discourse on Method), 4th discourse (translated by G E M  Anscombe and Peter Geach).

Animadverti jam ante aliquot annos quam multa, ineunte aetate, falsa pro veris admiserim, et quam dubia sint quaecunque istis postea superextruxi, ac proinde funditus omnia semel in vita esse evertenda, atque a primis fundamentis denno inchoandum, si quid aliquando firmum et mansurum cupiam in scientiis stabilire. Some years ago now I observed the multitude of errorsthat I had accepted as true inmy earliest years, and the dubiousness of the wholesuperstructure I had since then reared on them; and the consequent need of making a clean sweep foronce in my life, and beginning againfrom the very foundations, if Iwould establish somesecure and lasting result in science.

-Descartes, Rene¤
Meditationes,1st meditation (translated by G E M Anscombe and Peter Geach).