But even asI recommend these books, I recall the dissatisfaction with which I left them; for it appears that the Positivists have their dogmas like all the rest. Mr. Harrison is not content to say that mankind has not the mental tools for dealing with ultimate realities; he must needs prove that mankind never will and never can have these tools, I look back upon the long process of evolution and ask myself, What would an oyster think about Positivism? What would be the opinion of, let us say, a young turnip on the subject of Mr. Frederic Harrison's thesis? It may well be that the difference between a turnip and Mr. Harrison is not so great as will be the difference between Mr. Harrison and that super-race which some day takes possession of the earth and of all the universe. It does not seem to me good science or good sense to dogmatize about what this race will know, or what will be its tools of thought. What does seem to me good science and good sense is to take the tools which we now possess and use them to their utmost capacity.
What is it that we know about life? We know a seemingly endless stream of sensations which manifest themselves in certain ways, and seem to inhere in what we call things and beings. We observe incessant change in all these phenomena, and we examine these changes and discover their ways. The ways seem to be invariable; so completely so that for practical purposes we assume them to be invariable, and base all our calculations and actions upon this assumption. Manifestly, we could not live otherwise, and the spread of scientific knowledge is the further tracing out of such "laws"--that is to say, the ways of behaving of existence--and the extending of our belief in their invariability to wider and wider fields.
Once upon a time we were told that "the wind bloweth where it listeth." But now we are quite certain that there are causes for the blowing of the wind, and when our researches have been carried far enough, we shall be able to account for and to predict every smallest breath of air. Once we were told that dreams came from a supernatural world; but now we are beginning to analyze dreams, and to explain what they come from and what they mean. Perhaps we still find human nature a bewildering and unaccountable thing; but some day we shall know enough of man's body and his mind, his past and his present, to be able to explain human nature and
to produce it at will, precisely as today we produce certain reactions in our test-tubes, and do it so invariably that the most cautious financier will invest tens of millions of dollars in a process, and never once reflect that he is putting too much trust in the permanence of nature.
In many departments of thought great specialists are now working, experimenting and observing by the methods of science. If in the course of this book we speak of "certainty," we mean, of course, not the "absolute" certainty of any metaphysical dogma, but
the practical certainty of everyday common sense; the certainty we feel that eating food will satisfy our hunger, and that tomorrow, as today, two and two will continue to make four.
CHAPTER II
THE NATURE OF FAITH
(Attempts to show what we can prove by our reason, and what we know intuitively; what is implied in the process of thinking, and without which no thought could be.)
The primary fact that we know about life is growth. Herbert Spencer has defined this growth, or evolution, in a string of long words which may be summed up to mean: the process whereby a number of things which are simple and like one another become different parts of one thing which is complex. If we observe this process in ourselves, and the symptoms of it in others, we discover that
when it is proceeding successfully, it is accompanied by a sensation of satisfaction which we call happiness or pleasure; also that
when it is thwarted or repressed, it is accompanied by a different sensation which we call pain. Subtle metaphysicians, both inside the churches and out, have set themselves to the task of proving that there must be some other object of life than the continuance of these sensations of pleasure which accompany successful growth. They have proven to their own satisfaction that morality will collapse and human progress come to an end unless we can find some other motive, something more permanent and more stimulating, something "higher," as they phrase it. All I can say is that I gave reverent attention to the arguments of these moralists and theologians, and that for many years I believed their doctrines; but I believe them no longer.
I interpret the purpose of life to be the continuous unfoldment of its powers, its growth into higher forms--that is to say, forms more complex and subtly contrived, capable of more intense and enduring kinds of that satisfaction which is nature's warrant of life. If you wish to take up this statement and argue about it, please wait until you have read the chapter "Nature and Man," and noted
my distinction between instinctive life and rational life. For men, the word "growth" does not mean any growth, all growth, blind and indiscriminate growth. It does not mean growth for the tubercle bacillus, nor growth for the anopheles mosquito, nor growth for
the housefly, the spider and the louse. Neither do we mean that the purpose of man's own life is any pleasure, all pleasure, blind and
indiscriminate pleasure; the pleasure of alcohol, the pleasure of cannibalism, the pleasure of the modern form of cannibalism which
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we call "making money." We have survived in the struggle for existence by the cooperative and social use of our powers of judgment; and our judgment is that which selects among forms of growth, which gives preference to wheat and corn over weeds, and to self-control and honesty over treachery and greed.
So when we say that the purpose of life is happiness, we do not mean to turn mankind loose at a hog-trough; we mean that our duty as thinkers is to watch life, to test it, to pick and choose among the many forms it offers, and to say: This kind of growth is more permanent and full of promise, it is more fertile, more deeply satisfactory; therefore, we choose this, and sanction the kind of pleasure which it brings. Other kinds we decide are temporary and delusive; therefore we put in jail anyone who sells alcoholic drink, and we refuse to invite to our home people who are lewd, and some day we shall not permit our children to attend moving picture shows in which the modern form of cannibalism is glorified.
The reader, no doubt, has been taught a distinction between "science" and "faith." He is saying now, "You believe that everything is to be determined by human reason? You reject all faith?" I answer, No; I am not rejecting faith; I am merely refusing to apply it to objects with which it has nothing to do. You do not take it as a matter of faith that a package of sugar weighs a pound; you put it
on the scales and find out--in other words, you make it a matter of experiment. But all the creeds of all the religious sects are full of pronouncements which are no more matters of faith than the question of the weighing of sugar. Is pork a wholesome article of food or is it not? All Christians will readily acknowledge that this is a matter to be determined by the microscope and other devices of experimental science; but then some Jew rises in the meeting and puts the question: Is dancing injurious to the character? And immediately all members of the Methodist Episcopal Church vote to close the discussion.
What is faith? Faith is the instinct which underlies all being, assuring us that life is worth while and honest, a thing to be trusted; in other words, it is the certainty that successful growth always is and always will be accompanied by pleasure. The most skeptical scientist in the world, even my friend the physiologist who proves that life is nothing but a tropism, and can be produced by mixing chemicals in test-tubes--this eager friend is one of the most faithful men I know. He is burning up with the faith that knowledge
is worth possessing, and also that it is possible of attainment. With what boundless scorn would he receive any suggestion to the contrary--for example, the idea that life might be a series of sensations which some sportive demon is producing for the torment of man! More than that, this friend is burning up with the certainty that knowledge can be spread, that his fellow
