As other men are interested in the actual, so he was interested in the possible. The possibilities are not so highly finished as the facts that have been proved, but there are a great many more of them, and they are much more important. There are more things in the unexplored forest than in the clearing at its edge. Truth to him was not a field with metes and bounds. It was a continent awaiting settlement. First the bold pathfinders must adventure into it. Its vast spaces were infinitely inviting, its undeveloped resources were alluring. And not only did the path-finder interest him but the path-loser as well. But for his heedless audacity the work of exploration would languish. Was ever a philosopher so humorously tender to the intellectual vagabonds, the waifs and strays of the spiritual world!
Their reports of vague meanderings in the border-land were listened to without scorn. They might be ever so absent-minded and yet have stumbled upon something which wiser men had missed. No one was more keen to criticize the hard-and-fast dogmas of the wise and prudent or more willing to learn what might, by chance, have been revealed unto babes. The one thing he demanded was space. His universe must not be finished or inclosed. After a rational system had been formulated and declared to be the Whole, his first instinct was to get away from it. He was sure that there must be more outside than there was inside. "The 'through-and-through' universe seems to suffocate me with its infallible, impeccable all-pervasiveness. Its necessity with no possibilities, its relations with no subjects, make me feel as if I had entered into a contract with no reserved rights."
Formal philosophy seemed to him to be "too buttoned-up and white-chokered and clean-shaven a thing to speak for the vast, slow-breathing, unconscious Kosmos with its dread abysses and its unknown tides. The freedom we want is not the freedom, with a string tied to its leg and warranted not to fly away, of that philosophy. Let it fly away, we say, from _us_. What then?"
To this American there must be a true democracy among the faculties of the mind. The logical understanding must not be allowed to put on priggish airs. The feelings have their rights also. "They may be as prophetic and as anticipatory of truth as anything else we have." There must be give and take; "what hope is there of squaring and settling opinions unless Absolutism will hold parley on this common ground and admit that all philosophies are hypotheses, to which all our faculties, emotional as well as logical, help us, and the truest of which will in the final integration of things be found in possession of the men whose faculties on the whole had the best divining power?"