The truth of a proposition has nothing to do with its credibility. And vice versa.
Life is a tough proposition and the first hundred years are the hardest. - Wilson Mizner
The proposition that the people are the best keepers of their own liberties is not true. They are the worst conceivable, they are no keepers at all; they can neither judge, act, think, or will, as a political body. - John Adams
It is undesirable to believe a proposition when there is no ground whatsoever for supposing it is true. - Bertrand Russell
The Use of the Understanding, in endeavouring to find out the Meaning of any Proposition whatsoever, in considering the nature and Evidence for or against it, and in judging of it according to the seeming Force or Weakness of the Evidence. - Anthony Collins
That all men are equal is a proposition which, at ordinary times, no sane individual has ever given his assent. - Aldous Huxley
On Monday mornings I am dedicated to the proposition that all men are created jerks.
Life's a tough proposition, and the first hundred years are the hardest. - Wilson Mizner
Once a day....call yourselves to an account what new ideas, what new proposition or truth you have gained, what further confirmation of known truths, and what advances you have made in any part of knowledge. - Isaac Watts
I firmly disbelieve in death. A spirit never dies. Where it wanders when it leaves the flesh, is a cognitive proposition. - Kellie Elmore
People get so frightened for no reason, but I'll tell you, to live with no purpose is a far more frightening proposition... You bring yourself to say yes when you always thought the only possible answer was no, and your whole world changes. - Liz Rosenberg
It happens to us all. We drink too much, take one too many hits of acid, proposition the wrong prostitute and end up by the side of some freeway, disheveled and disoriented. - Kenyon Ledford
I have been thinking that I would make a proposition to my Republican friends... that if they will stop telling lies about the Democrats, we will stop telling the truth about them. - Adlai E. Stevenson Jr.
By a curious confusion, many modern critics have passed from the proposition that a masterpiece may be unpopular to the other proposition that unless it is unpopular it cannot be a masterpiece. - G. K. Chesterton
Any proposition containing the word "is" creates a linguistical structural confusion which will eventually give birth to serious fallacies. - Alfred Korzybski