“There are people who think in a way which I would simply call “accurate” thinking. They are people with persistent, highly controlled intellectual habits. These people can be recognized by four characteristics:
1. They remain inexorably silent if they have nothing to say which is at least formulated in such a way that it could be tested.
2. They only make assertions about something when whatever this may be will stand up to a possible subsequent test; with the reservation, however, that some time in the distant future something could be discovered that might lead to a revaluation of their statement.
3. They distinguish precisely in what they say between that which they can prove and that which they cannot prove.
4. They object relentlessly to something being said in such a way that it cannot be tested, or if it can be tested it will not stand up to a rigorous repeat-test.”
Heinrich Scholz; mathematician, theologian
Walter R. Fuchs, Cybernetics for the Modern Mind, p. 47, Rupert Hart-Davis Educational Publications and The Macmillan Company , 1971 (Translation)