It is possible not to share this life-conception; it is possible to reject it; it is possible to prove its inexactness and irregularity; but it is impossible to judge of the teaching, without having first grasped the life-conception from which it results; still less possible is it to judge about a subject of a higher order from a lower point of view, to judge of the tower by looking at the foundation. But it is precisely this that the learned men of our time are doing. They do so because they abide in an error, which is like the one of the churchmen, the belief that they are in possession of such methods of the study of the subject that, as soon as these methods, called scientific, are used, there can be no longer any doubt as to the correctness of the comprehension of the subject under advisement. It is this possession of an instrument of cognition, which they deem infallible, that serves as the chief obstacle in the comprehension of the Christian teaching by unbelievers and so-called scientific men, by whose opinion the vast majority of unbelievers, the so-called cultured men, are guided. From this imaginary comprehension of theirs arise all the errors of the scientific men in respect to the Christian teaching, and especially two strange misconceptions which more than any other impede the correct comprehension of it. One of these misconceptions is this, that the Christian vital teaching is impracticable, and so is either entirely unobligatory, that is, need not be taken for a guide, or else must be modified and moderated to such an extent as to make it practicable in our society. Another misunderstanding is this, that the Christian teaching of love of God, and so the service of Him, is an obscure, mystical demand, which has no definite object of love, and so must give way to a more precise and comprehensible teaching about loving men and serving humanity. The first misconception about the impracticableness of the teaching consists in this, that the men of the social comprehension of life, being unable to comprehend the method by means of which the Christian teaching guides men, and taking the Christian indications of perfection to be rules which determine life, think and say that it is impossible to follow Christ's teaching, because a complete fulfilment of this teaching destroys life. "If a man fulfilled what was preached by Christ, he would destroy his life; and if all men should fulfil it, the whole human race would come to an end," they say. "If we care not for the morrow, for what we shall eat and drink and be clothed in; if we do not defend our lives; if we do not resist evil with force; if we give our lives for our friends, and observe absolute chastity, no man, nor the whole human race, can exist," they think and say.