But intellectually, as well as morally or politically, or as well as in any of the departments of the practical, emotional life, when trouble comes we turn to nature. Nature has a mind as well as a heart, and when state, and church, and social tradition have lost their validity and infallibility, their various formulæ being no longer reasonable to us, when we have to depose them from their position as our accepted teachers, then we become scientists, which is to say, intellectual prodigals. Science, the open-minded study of nature, is only a homesickness for truth seeking relief. Does the scientist doubt? He is one of the princes of doubters. He doubts, as in due time we [p.024] shall more fully appreciate, even to the extreme position of agnosticism. He doubts all things human that always he may be learning of nature. So the companionship of nature for the comfort and pardon which she is sure to give, and for the deeper knowledge which she is certain to impart, is a passion of the doubter. True, no passion is free from dangers; yet this passion, at least this passion, has somewhat of hope in it. But, secondly, the companionship of one's fellows is not less strongly desired. Huddling together in time of distress is by no means peculiar to the animal world; in human life it has more than once made distress seem richly worth while. "We have each other" in word or thought has been the comforting reflection of many a family, or many a community, when the money has gone, or when in other ways, possibly through a great fire, or a great earthquake, or the ravages of a disease, afflictions have come, and "Now we know how others have suffered" has been not less common. Indeed, it is my own conviction that these two reflections always rise together. The distress or affliction of doubt, however, is certainly no exception to the rule. Doubt often separates an individual from the customary corporate life with which he has long identified himself, throwing him out of his church, or his party, or his society, or even his immediate family, but the doubter at once feels his loneliness, and gets a yearning, never realized before, for social relations. Benedict Spinoza may have been better than most of us, but he was not in any other way different, and though maligned and insulted, as earlier in history [p.025] another of his race had been, for his doubts and heresies, and though exposed to the dangers of the assassin's knife, and finally, when other measures failed, with special cruelties excommunicated by his synagogue, he loved his people, and all men besides, as few have loved them. Doubt makes one dependent; isolation gives a sense of loss; and, if ever a solution of the doubt comes, in the life and consciousness which it enjoins the lost companions, whether they will or not, are included with oneself. In many ways this is an important fact; yet it must suffice that we see the affinity of the doubter for society.