In dealing with a man of fine moral character, again, we are dealing with the highest achievement of the organic kingdom. But in dealing with a spiritual man we are dealing with _the lowest form of life in the spiritual world_. To contrast the two, therefore, and marvel that the one is apparently so little better than the other, is unscientific and unjust. The spiritual man is a mere unformed embryo, hidden as yet in his earthly chrysalis-case, while the natural man has the breeding and evolution of ages represented in his character. But what are the possibilities of this spiritual organism? What is yet to emerge from this chrysalis-case? The natural character finds its limits within the organic sphere. But who is to define the limits of the spiritual? Even now it is very beautiful. Even as an embryo it contains some prophecy of its future glory. But the point to mark is, that _it doth not yet appear what it shall be_. The want of organization, thus, does not surprise us. All life begins at the Amœboid stage. Evolution is from the simple to the complex; and in every case it is some time before organization is advanced enough to admit of exact classification. A naturalist's only serious difficulty in classification is when he comes to deal with low or embryonic forms. It is impossible, for instance, to mistake an oak for an elephant; but at the bottom of the vegetable series, and at the bottom of the animal series, there are organisms of so doubtful a character that it is equally impossible to distinguish them. So formidable, indeed, has been this difficulty that Hæckel has had to propose an intermediate _regnum protisticum_ to contain those forms the rudimentary character of which makes it impossible to apply to the determining tests.