Sexual terminology is widely used in spheres, which haven't direct connection with the sexual sphere, and is used not only as the sordid slang, and not only in Russian. So, to name any cruelty as sadism is now the norm.
    The striking example of such a lexical phenomenon is the Freudian term libido. By NO means sharing every opinion of Z. Freud (1856-1939), let us admit logicality of his analogy (but not identity at all) between sexual striving and vital power. Prolongation of the generation demands from an individual, as a rule mainly from a male (for we're speaking here not only about people), full, extreme, sometimes even super-extreme mobilization in relations both the competitive one against rivals and with a partner. if the vital power (libido) is low, so power for sexual claims (also libido) is also ainsufficient.
    Similarly, very far analogously with sex, we use here the term of masochism.
    The modern science paradigm considers suffers as a factor, which is always, in principle undesirable and useless, as well as accidental - unfavourableness. Accordingly, the tendency to avoid suffers seems to be a norm.
    Esoterics, occultism exclude in principle the possibility of the fortuity. Every event is considered here as providential and/or as purposeful. Suffers are here elements of karma, is a punishment for wrong behavior, for resistance to (divine) stream of life (fate, Dao, … ) - to expiate sins...
    Suffers may also be advances for future sins, be a guaranty for avoid still more suffers in future, be the means to earn anti-suffers (pleasures, delights, felicity, beatitude), and means to avoid new incarnations ...
    And if - an ideal case - such a rescue is already gained, so an incarnation can nevertheless occurred and be dedicated to the help to others, to indemnity not proper sins but outsider ones, to improving, correcting the other's karma, to reducing the other's suffers. Self-sacrifice of such a kind may just be considered as the highest, noble, spirit form of masochism. In this sense, one may name as a masochist both Prometheus and Jesus the Christ.
    The opposition to such the masochism - both his antonym and that, which hinders to become a high, spirit masochist - is not sadism but the egoism.
    The sources of sadism (also not only in a sense of sex at all) are manifold and aren't mutually exclusive. Let's note two.
       1. It may be development of the extreme grade of some quality into the contrast quality. So, extreme jang (activity) causes inng (passivity) and vice versa. Analogously emotion of love with creative tendency may on its extreme grade paradoxically develop into affect with destructive tendency (perverted emotion is generated by abundance of emotion, not obligatory egoistic). The sole antidote here, including the prophylaxis, may be self-control. Feelings mustn't exasperate entirely. A bit, an edge of the consciousness must remain calm and verify (and control), what's happen in the emotion sphere. At any moment, any situation, a noble man (tszjunj-tsy) must be capable to realize of his moral-psyche state [ 1 ].
       2. It may be energetical (subtle-energetic, astral) vampirism: energetical resources of a victim become more accessible for a vampire in those moments when he (a victim) suffers and splashes out his negative emotions to the tormentor. Defending from a vampire with force - both active, by means of re-aggression, neutralization of him, and passive, by means of screening both physical and/or astral one - is the act of the weakness admission, of non-superiority over a vampire, admission of your perceptibility, non-indifference on his influence. If a baby, whom you hold on your hands, thrashes you with zeal for he demands you to give him a sweety, so you laugh, you console him, you give him something instead of, or you yield to him at last and give him the sweety, BUT you have by no means even an idea to re-slap him, nor to armour yourself: all the same you are insensitive to his beating. Your superiority over a baby is huge, qualitative. Necessity of re-aggression or defence arises only if your powers are commensurable. One doesn't need to defend against a vampire. One ought to pity him and to feed him fill. And better - to instruct him, how to feed on his own, how to cease to be a vampire. If such a tactics is beyond your ability, so it signifies that you yourself ought to learn the same.
    Finally egoism turns against the egoist himself, worsening his karma, which will demand requital, sooner or later but inevitably. Therefore it's necessary to get rid of it. If egoism is realized, is ideological, if it comes from the egoist's reason, so the problem is ethic-pedagogical, which won't be discussed here. But if egoism is contrary to his reason, isn't obedient to the reason, predominant over it, is spontaneous, so it is manifestation of lack of will, is psyche obsession, and the problem is psychological. Psi-technique provides capability to be delivered painlessly, quickly and reliably from objectionable, unwanted emotions, as well as to instruct how not to be a vampire, the [ 2 ], but it is a special subject.
    The sources of egoism are instincts, psychic heritage, received from biological ancestors, who would perish as the species if they weren't obtain them (or weren't retain) in the course of evolution. One, who was better (stronger, more cunning etc) than others, this one took the territory, the food and other advantages including election of the sex partner(s).
    Emotions, which express/present both activity in order to realize such advantages and satisfaction owing to such achievements, which (achievements) cause simultaneously perfection of the species, improvement of its fitness/suitability to environment, may be represented by the formula of the natural, primitive egoism: