(28) It should be noted by the student, in passing, that the Green group of auric colors seems, at first glance, to be an exception to the general rule regarding the blending of the primary auric colors; and to manifest contradictions in character. For instance, it is difficult for the average student to comprehend why a blending of the spiritual blue and the intellectual yellow should yield a green indicating deceit, etc. A subtle analysis of deceit, however, gives the secret of this combination, particularly when it is noted that in certain of the less desirable of the green combinations there is combined a slight mixture of black and of red. It is not necessary to go into details concerning this particular point—it is enough to indicate the nature of the solution of the mystery. Again, there is a certain shade of Green, that which manifests in the prevailing colors of trees, plants, etc., which when shown in the auric coloring indicates a love of nature, etc. The following words from a celebrated occultist gives a valuable hint to those whose minds tend to keen analysis concerning these matters; this occultist says: "To those who are fond of analysis of this kind, I will drop the following hint, which may help them in the matter, viz.: The key is found in the fact that Green lies in the centre of the spectrum, and is a balance between the two extremes, and is also influenced by these two extremes in a startling manner." Important Suggestions The Rosicrucian teachers do not content themselves with instructing their students concerning the particular colors which, when seen in the aura, indicate the presence and activity of certain mental or emotional states in the person. They also instruct the student according to the celebrated principle of Action and Reaction, which forms an important feature of certain branches of the Rosicrucian teachings. That is to say they instruct the student that if he will hold in his mind the mental image of a certain color, there will result a reaction in the direction of the production in the student's mind or emotional nature of the feeling or emotion corresponding to that particular color. For instance, if the student will hold his thought and attention firmly concentrated on the Red group of colors, there will be awakened in him a strong passional emotion, and the manifestation of animal vitality and vigor, virility, courage, etc. Again, if he will hold in his mind in the same way the Blue group of colors, he will experience an uplift of spiritual or religious emotional feelings, and his nature will be quickened along those lines. Again, if he would stimulate his intellectual faculties, or reinvigorate a tired mind, he has but to concentrate on the Yellow group of colors to obtain the desired result. So, it is seen, not only do mental and emotional states manifest appropriate colors, but the colors themselves tend to produce their corresponding mental and emotional states. The action of Red upon the bull and other animals is explained in this way; also we have here a suggestion as to why a man "sees red" under moments of great excitement leading to physical action of punishment, etc.