In cases in which good or evil thoughts are projected at individuals, those thoughts, if they are to directly fulfil their mission, must find, in the aura of the object to whom they are sent, materials capable of responding sympathetically to their vibrations. Any combination of matter can only vibrate within certain definite limits, and if the thought-form be outside all the limits within which the aura is capable of vibrating, it cannot affect that aura at all. It consequently rebounds from it, and that with a force proportionate to the energy with which it impinged upon it. This is why it is said that a pure heart and mind are the best protectors against any inimical assaults, for such a pure heart and mind will construct an astral and a mental body of fine and subtle materials, and these bodies cannot respond to vibrations that demand coarse and dense matter. If an evil thought, projected with malefic intent, strikes such a body, it can only rebound from it, and it is flung back with all its own energy; it then flies backward along the magnetic line of least resistance, that which it has just traversed, and strikes its projector; he, having matter in his astral and mental bodies similar to that of the thought-form he generated, is thrown into respondent vibrations, and suffers the destructive effects he had intended to cause to another. Thus "curses [and blessings] come home to roost." From this arise also the very serious effects of hating or suspecting a good and highly-advanced man; the thought-forms sent against him cannot injure him, and they rebound against their projectors, shattering them mentally, morally, or physically. Several such instances are well known to members of the Theosophical Society, having come under their direct observation. So long as any of the coarser kinds of matter connected with evil and selfish thoughts remain in a person's body, he is open to attack from those who wish him evil, but when he has perfectly eliminated these by self-purification his haters cannot injure him, and he goes on calmly and peacefully amid all the darts of their malice. But it is bad for those who shoot out such darts. Another point that should be mentioned before passing to the consideration of our illustrations is that every one of the thought-forms here given is drawn from life. They are not imaginary forms, prepared as some dreamer thinks that they ought to appear; they are representations of forms actually observed as thrown off by ordinary men and women, and either reproduced with all possible care and fidelity by those who have seen them, or with the help of artists to whom the seers have described them. * * * * * For convenience of comparison thought-forms of a similar kind are grouped together. ILLUSTRATIVE THOUGHT-FORMS AFFECTION