The criterion which we use to test the genuineness of apparent statements of fact is the criterion of verifiability. We say that a sentence is factually significant to any given person, if, and only if, he knows how to verify the proposition which it purports to express - 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.
Alfred Jules AyerRelated topics
apparent certain criterion express fact false given lead person proposition reject say sentence significant test under use genuineness conditions verifiabilityRelated quotes
If now I...say "Stealing money is wrong," I produce a sentence which has no factual meaning - that is, expresses no proposition which can be either true or false. It is as if I had written "Stealing money!!" - where the shape and thickness of the exclamation marks show, by a suitable convention, that a special sort of moral disapproval is the feeling which is being expressed.
Alfred Jules Ayer
Not every painter has a gift for painting, in fact, many painters are disappointed when they meet with difficulties in art. Painting done under pressure by artists without the necessary talent can only give rise to formlessness, as painting is a profession that requires peace of mind. The painter must always seek the essence of things, always represent the essential characteristics and emotions of the person he is painting..
Titian
The Bell curve is a fact of life. The blacks on average score 85 per cent on IQ and it is accurate, nothing to do with culture. The whites score on average 100. Asians score more. The Bell curve authors put it at least 10 points higher. These are realities that, if you do not accept, will lead to frustration because you will be spending money on wrong assumptions and the results cannot follow.
Lee Kuan Yew
There are in fact four very significant stumbling blocks in the way of grasping the truth, which hinder every man however learned, and scarcely allow anyone to win a clear title to wisdom, namely, the example of weak and unworthy authority, longstanding custom, the feeling of the ignorant crowd, and the hiding of our own ignorance while making a display of our apparent knowledge.
Roger Bacon
There are some simple maxims [...] which I think might be commanded to writers of expository prose. First: never use a long word if a short word will do. Second: if you want to make a statement with a great many qualifications, put some of the qualifications in separate sentences. Third: do not let the beginning of your sentence lead the reader to an expectation which is contradicted by the end.
Bertrand Russell
