Almost all thinking people agree that you should not have probability 1 (or 0) for any event, other than one demonstrable by logic, like 2 x 2 = 4.
It is evident that one cannot say anything demonstrable about the problem before having resolved these preliminary questions, and yet we hardly possess the necessary information to solve some of them.georges cuvier
The dog has got more fun out of Man than Man has got out of the dog, for the clearly demonstrable reason that Man is the more laughable of the two animals.james thurber
For although in a certain sense and for light-minded persons non-existent things can be more easily and irresponsibly represented in words than existing things, for the serious and conscientious historian it is just the reverse. Nothing is harder, yet nothing is more necessary, than to speak of certain things whose existence is neither demonstrable nor probable. The very fact that serious and conscientious men treat them as existing things brings them a step closer to existence and to the possibility of being born.hermann hesse
Nowadays, you cannot be a very Effective political figure without Having a demonstrable sense of humor. People take to it.robert orben
The aristocratic mind … is anti-analytical. It is concerned more with the status of being than with the demonstrable relationship of parts.richard weaver