4. Finally: As with the appearance of man there were introduced new powers and properties unimaginable from the animal point of view, and therefore from that point of view seemingly supernatural--i. e., above their nature--so with the appearance of the Christ we ought to expect new powers and properties unimaginable from the human point of view, and therefore to us seemingly supernatural--i. e., _above our nature_. The Christ as defined above--i. e., as the _ideal man_--is undoubtedly a true object of rational worship. There are two and only two fundamental moral principles, viz., love to God and love to man. Both of these must be embodied in a rational worship. The one must be embodied in the worship of an Infinite Spirit--God; the other in the worship of the ideal man--the Christ. But some one will object that, admitting all this, it is impossible that the goal, the ideal, should appear until the _end of the course_ of evolution. To him I answer: This is indeed true of animal evolution, but not of human evolution. We have already seen (see p. 88 _et seq._) that there is an essential difference in this regard between these two kinds of evolution. In addition to all the factors of organic evolution, in human progress there is a new and higher factor added, which immediately takes precedence of all others. This factor is _the conscious voluntary co-operation of the human spirit in the work of its own evolution_. The method of this new factor consists essentially in the formation, and especially in the _voluntary pursuit, of ideals_. In organic evolution _species_ are transformed by the _environment_. In human evolution _character_ is transformed by _its own ideal_. Organic evolution is by _necessary_ law--human evolution is by voluntary effort, i. e., by _free_ law. Organic evolution is _pushed_ onward and upward from behind and below. Human evolution is _drawn_ upward and forward from above and in front by the attractive force of ideals. Thus the ideal of organic evolution can not appear until the end; while the attractive ideals of human evolution _must_ come--whether only in the imagination or realized in the flesh--but must come somehow _in the course_. The most powerfully attractive ideal ever presented to the human mind, and, therefore, the most potent agent in the evolution of human character, is _the Christ_. This ideal must come--whether in the imagination or in the flesh I say not, but--must come somehow _in the course_ and not at the end. At the end the whole human race, drawn upward by this ideal, must reach the fullness of the stature of the Christ.