If, then, dogmatic people are slaves to their fears, while more thoughtful people, as has not needed to be said, seem to get no reward from their self-consciousness but the uncertain reward of their doubts, then only such as live quietly, asserting nothing, depending on nothing, and even assuming nothing, but simply taking what comes, are left to represent genuine belief. Yet how many such are there? A few may seem to approach the ideal, if ideal it be, but the class itself in realization must be said to be a hypothetical one, and few, if any, of us could ever really envy or strive to imitate its supposed manner of living; for, in spite of all the dangers and all the doubts and fears, only the constantly examined life can ever really lure us. Doubt, besides being a general condition of life, seems to be also incident to what gives life worth. But, furthermore, not only are we all universal doubters; the case for doubt in the world is, if possible, even stronger; for also--and this is the second general fact: _Doubt is a phase, nay, a vital condition of all consciousness_. To be a conscious creature is to be a doubting creature. [p.010] In so many ways psychology is teaching us to-day with renewed emphasis that we are conscious of nothing as it is, and that more or less clearly we all know our shortcoming in this regard; or again, with still more directness and emphasis, that for us there is no such thing as a state of consciousness which does not indicate tension, or unstable equilibrium, that is to say uncertainty, in our activity. Nor have we need of the testimony of science to these facts, since common personal experience is well aware of them. In small things and in great consciousness transforms or refracts. In small things and in great consciousness marks a moment of poise between an impulse to do something, and more or less distinctly recognized conditions or relations that would put restraint upon the doing of it. Even the law of relativity, a psychological law only in its definite formulation, in its idea a simple fact of everyday experience, true for all conscious states from the crudest perceptions of the organs of sense to the most highly developed ideas of critical reflection, by binding as it does all the details of actual or possible experience into a whole, every part of which acts upon the other parts, points very directly to this fact of poise and instability, besides indicating also that knowledge never can be literally or objectively exact, and that at least with some clearness every knower must know it cannot. How can there ever be even a single stable or a single finally accurate element in the consciousness of a creature whose experience, in the first place, can comprise only related, interdependent parts, and whose nature, in the second place, is an essentially mobile and active [p.011] one? Moreover, as just one other way of suggesting the inexactness and uncertainty of consciousness