The solutions of the problem of life that have been offered he considers to be five—Religion and Immanental Idealism, Naturalism, Socialism and Individualism, the first two regarding the invisible world as the reality in life, the others laying emphasis on man's life in the present world. The reader will perhaps wonder how his choice has fallen upon these systems of thought and these alone. The explanation is a simple one: he considers it necessary to deal only with those theories which can form, and have formed, bases for a whole system of life. Mere theoretical ideas of life, especially negative ideas such as those of agnosticism and scepticism, do not form such a basis, but the five chosen for discussion can, and have to some extent, posed as complete theories of life, upon which a system of life can be built.
Has Religion solved the question? If it has, then it must have done so in that which must be considered its highest form—in Christianity. Christianity has attempted the solution by placing stress upon a higher invisible world, a world in sharp contrast with the mere world of sense, and far superior to it. It unites life to a supernatural world, and raises mankind above the level of the natural world. It has brought out with great clearness the contrast between the higher world and the world of sin, and has shown the need for a break with the evil in the world. It has given to man a belief in freedom, and in the necessity for a complete change of heart. It has proved a source of deliverance from the feeling, of guilt, and a comfort in suffering. Indeed, considering all the facts, there seems to be no doubt that, of all the solutions offered, religion has been the most powerful factor in the history of mankind.
Its influence would continue for the present and future, were it not that doubt has been cast upon its very foundations, and had not circumstances arisen to take men's minds away from thoughts of a higher and invisible world, and to concentrate them to a greater extent than formerly upon the world of sense. The progress of the natural sciences has done much to bring about the change. Christianity made man the centre of the universe, for whom all things existed, but the sciences have insisted upon a broader view of the universe, and have deposed man from his throne, and given him a much humbler position. Then as the conception of law became more prominent, and scientists became more and more inclined to explain all things as the result of natural laws, the idea of a personal God in constant communion with, and supervision over mankind, fell into disfavour.
And the study of history has caused questions to be raised. Some historians have endeavoured to show that the idea of an overworld is merely the characteristic of a certain stage in the evolution of mankind, and that the ideas of religion are, after all, little more than the mental construction of a God upon the image of man's own self. History has attacked the doctrinal form of religion, and has endeavoured to show that religions have been very largely coloured and influenced by the prevailing ideas of the time; and the question naturally arises as to whether there is anything more in religion than these temporary elements.
And this is not all. In the present age the current of human activity is strong. Man is beginning to accomplish things in the material world, and is becoming anxious to accomplish more. His railways cover the lands, his ships sail the seas, and his aeroplanes fly through the air. He has acquired a taste for this world, a zest for the conquest and the utilising for his own pleasure and benefit of the world of nature. And when this occurs, the overworld sinks into the background—he is satisfied with the present, and feels no need, except under special circumstances, of a higher world. The sense world at present makes a strong appeal—and the stronger it becomes, the less he listens to the call of an overworld.
The sciences, history, and the special phases of human activity have drawn attention from a higher, invisible world, and have cast doubts upon its very existence.
As a result of this, "Religion (in the traditional form), despite all it has effected, is for the man of to-day a question rather than an answer. It is itself too much of a problem to interpret to us the meaning of our life, and make us feel that it is worth the living."
In these words Eucken states his conviction that Christianity in its orthodox forms cannot solve the problem of the present. This, however, is not all he has to say concerning religion. He is, in truth, a great believer in religion, and as will be seen, he believes that later it will again step forth in a changed form as "the fact of facts" to wield a power perhaps greater than ever before.
As in the case of religion, Immanent Idealism is a theory that gives life an invisible basis, but the invisible has been regarded as that which lies at the root of the present world, and not as a separate higher world outside our own. The Divine it considers not as a personal being apart from the world, but as a power existing in and permeating it, that indeed which gives to the world its truth and depth. Man belongs to the visible world, but inwardly he is alive to the presence of a deeper reality, and his ambition must be to become himself a part of this deeper whole. If by turning from his superficial life he can set himself in the depths of reality, then a magnificent life, with the widest prospects, opens out before him. "He may win the whole of infinity for his own, and set himself free from the triviality of the merely human without losing himself in an alien world." And if he does so, he is led to place greater emphasis upon the high ideals of life than upon material progress. He learns to value the beautiful far above the merely useful; the inner life above mere existence, a genuine spiritual culture above the mere perfecting of natural and social conditions. There is brought into view a new and deeper life in which the emphasis is placed upon the good, the beautiful, and the true. In this way idealism has inspired many men to put forth their energies for the highest aims, has lifted the individual above the narrowness of a life devoted to himself alone, and has produced characters of exceptional beauty and strength. It claims, indeed, to be able to shape the world of man more satisfactorily than religion can, for it has no need for doctrines of the Divine, the Divine being immediately present in the world. But despite its great influence in the past, its power has of late been considerably weakened.
The question of the existence of a deeper invisible reality in the world has become as problematic as the doctrines of religion.