Thus, names are just as “true” or “false” as definite mental pictures are. They set up similar verification-processes, and lead to fully equivalent practical results.
All human thinking gets discursified; we exchange ideas; we lend and borrow verifications, get them from one another by means of social intercourse. All truth thus gets verbally built out, stored up, and made available for everyone. Hence, we must talk consistently just as we must think consistently: for both in talk and thought we deal with kinds. Names are arbitrary, but once understood they must be kept to. We mustn’t now call Abel “Cain” or Cain “Abel.” If we do, we ungear ourselves from the whole book of Genesis, and from all its connections with the universe of speech and fact down to the present time. We throw ourselves out of whatever truth that entire system of speech and fact may embody.
The overwhelming majority of our true ideas admit of no direct or face-to-face verification-those of past history, for example, as of Cain and Abel. The stream of time can be remounted only verbally, or verified indirectly by the present prolongations or effects of what the past harbored. Yet if they agree with these verbalities and effects, we can know that our ideas of the past are true. as true as past time itself was, so true was Julius Caesar, so true were antediluvian monsters, all in their proper dates and settings. That past time itself was, is guaranteed by its coherence with everything that’s present. True as the present is, the past was also.
Agreement thus turns out to be essentially an affair of leading—leading that is useful because it is into quarters that contain objects that are important. True ideas lead us into useful verbal and conceptual quarters as well as directly up to useful sensible termini. They lead to consistency, stability and flowing human intercourse. They lead away from eccentricity and isolation, from foiled and barren thinking. The untrammeled flowing of the leading-process, its general freedom from clash and contradiction, passes for its indirect verification; but all roads lead to Rome, and in the end and eventually, all true processes must lead to the face of directly verifying sensible experiences somewhere, which somebody’s ideas have copied.
Such is the large loose way in which the pragmatist interprets the word agreement. He treats it altogether practically. He lets it cover any process of conduction from a present idea to a future terminus, provided only it run prosperously. It is only thus that “scientific” ideas, flying as they do beyond common sense, can be said to agree with their realities. It is, as I have already said, as if reality were made of ether, atoms or electrons, but we mustn’t think so literally. The term “energy” doesn’t even pretend to stand for anything “objective.” It is only a way of measuring the surface of phenomena so as to string their changes on a simple formula.
Yet in the choice of these man-made formulas we cannot be capricious with impunity any more than we can be capricious on the commonsense practical level. We must find a theory that will work; and that means something extremely difficult; for our theory must mediate between all previous truths and certain new experiences. It must derange common sense and previous belief as little as possible, and it must lead to some sensible terminus or other that can be verified exactly. To “work” means both these things; and the squeeze is so tight that there is little loose play for any hypothesis. Our theories are wedged and controlled as nothing else is. Yet sometimes alternative theoretic formulas are equally compatible with all the truths we know, and then we choose between them for subjective reasons. We choose the kind of theory to which we are already partial; we follow “elegance” or “economy.” Clerk Maxwell somewhere says it would be “poor scientific taste” to choose the more complicated of two equally well-evidenced conceptions; and you will all agree with him. Truth in science is what gives us the maximum possible sum of satisfactions, taste included, but consistency both with previous truth and with novel fact is always the most imperious claimant.
I have led you through a very sandy desert. But now, if I may be allowed so vulgar an expression, we begin to taste the milk in the coconut. Our rationalist critics here discharge their batteries upon us, and to reply to them will take us out from all this dryness into full sight of a momentous philosophical alternative.
Our account of truth is an account of truths in the plural, of processes of leading, realized in rebus, and having only this quality in common, that they pay. They pay by guiding us into or towards some part of a system that dips at numerous points into sense-percepts, which we may copy mentally or not, but with which at any rate we are now in the kind of commerce vaguely designated as verification. Truth for us is simply a collective name for verification-processes, just as health, wealth, strength, etc., are names for other processes connected with life, and also pursued because it pays to pursue them. Truth is made, just as health, wealth and strength are made, in the course of experience.
Here rationalism is instantaneously up in arms against us. I can imagine a rationalist to talk as follows:
“Truth is not made,” he will say; “it absolutely obtains, being a unique relation that does not wait upon any process, but shoots straight over the head of experience, and hits its reality every time. Our belief that yon thing on the wall is a clock is true already, altho no one in the whole history of the world should verify it. The bare quality of standing in that transcendent relation is what makes any thought true that possesses it, whether or not there be verification. You pragmatists put the cart before the horse in making truth’s being reside in
