The principal problem is to offer a viable theory as to what truth itself consists in, or, to put it another way, “What is the nature of truth?” To illustrate with an example – the problem is not: Is it true that there is extraterrestrial life? The problem is: What does it mean to say that it is true that there is extraterrestrial life? Astrobiologists study the former problem; philosophers, the latter.
This philosophical problem of truth has been with us for a long time. In the first century AD, Pontius Pilate (John 18:38) asked “What is truth?” but no answer was forthcoming. The problem has been studied more since the turn of the twentieth century than at any other previous time. In the last one hundred or so years, considerable progress has been made in solving the problem.
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| Professor Christopher Ullman |
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