is in some sense an original product of the man who knows. In it is expressed his disposition, his power of attention, his skill in recognition, his interest in reality, his creative might. Exact knowledge is, in fact, best illustrated by cases where we ourselves make what we know. So only is mathematical knowledge possible; mathematical ideas are all products of a constructive imagination. And so it is in all other thought-life. Mentally produce, and thou shalt know thy product. But we must remember, for what we produce we are in some sense morally responsible ; and thus, in discussing the nature of knowledge, we are trespassing on the border-land of ethics.
To sum up all in a few words: Plainly, since active inner processes are forever modifpng and building our ideas; since our interest in what we wish to find does so much to determine what we do find; since we could not if we would reduce ourselves to mere registering machines, but remain always builders of our own little worlds, — it becomes us to consider well, and to choose the spirit in which we shall examine our experience. Every one is certain to be prejudiced, simply because he does not merely receive experience, but himself acts, himself makes experience. One great question for every truth-seeker is: In what sense, to what degree, with what motive, for what end, may I and should I be prejudiced? Most of us get our prejudices wholly from the fashions of other men. This is cowardly. We are responsible for our own creed, and must make it by our own hard work. Therefore, the deepest and
