unsatisfactory.

Before a solution can be regarded as a satisfactory one, Eucken holds
that it should satisfy certain conditions. It should offer an
explanation for life which can be a firm basis for life, it must admit
of the possibility of human freedom, and must release the human being
from sordid motives--unless it satisfy these conditions, then it cannot
be accepted as final.

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.