Human sexuality is fundamental to human behaviour and society, and to understand this precious and beautiful part of life may provide a key to helping us realize our fuller potential as human beings and promote good mental and general health. Biologically sexuality serves as a means of reproducing the species, the word sexual referring to the division of labour between male and female, compared to asexual reproduction in simple organisms which reproduce by cell division. Through the process of human evolution the organization of social groups may have included monogamy as a mechanism for social stability (for example to prevent jealousy and infanticide), and certainly the concept of 'true love' does appear to have validity when we consider accounts of it, such as in Jane Austen's novel, Pride and Prejudice for example. The history of art is full of accounts of sexual tension between suitors, and the possibility of matrimonial bliss. In the modern world where societies have been put under so much pressure, monogamy too has not been a flourishing world of happiness that art had so dedicatedly tried to bring to light, and also in popular culture (pop music), thousands upon thousands of songs refer to the joys and sufferings of sexual relationships, generating huge sums of revenue, although some of the songs, whose roots are in traditional artistic forms, do seem to ring true. There is also the political aspect in which matrimony has been used as an instrument of coersion, even through organized religion, including Hinduism, Christianity, and Islam. However another political aspect is the concept of equality, including between the sexes, i.e. the realization of equality presupposes the existence of the principle. Thus it may be possible to argue that the modern basis of sexuality is a formal expression of love between a woman and man, and the creation of a family with sons and daughters. More abstractly it may also be defined in terms solely of the relationship between a man and woman, with many men and women choosing not to raise a family, while the sexual relationship which they mutually and formally engage in, as far as they are concerned, is to some extent the same. This brings us to a one point which may be raised concerning what may be meant by the term "orientation", apart from the fact that some adults also engage in same-sex relationships, which in this sense seems to be a justified argument. However one difficultly with what appears to be the rather neoliberal concept of "orientation" is that it may suggest that sexuality is something like a blank page upon which anyone can choose to define how society is organized, in this instance their sexual preferences. A more traditional view however is that homosexuality is a tendency and categorically not an orientation, that it is a natural inclination which has existed in human society throughout history, but that to define it in modern terms as an 'orientation' defines sexuality in terms of human freedom differently, i.e. in terms of neoliberal values. A more orthodox concept of "freedom", in terms of the quality of life humans may be able to enjoy in society, is one which presupposes necessity, a formal concept of what must exist, for example a tree must grow upwards towards the sky in order to live, and similarly it may be argued that human beings (apart from more dedicated people who practice meditation and study, and choose not to engage in a sexual relationship), do have a fundamental need to be loved by a sexual partner and to love that partner, after all since it affirms what is natural in them, the natural affection and experience of sexual intimacy and joy (there are of course other aspects to such need, including a child's need for love, and the love between friends). However the freedom and necessity associated with human society, including sexual behaviour, comes at a particular price, and ironically the more we buy into the neoliberal premise associating "freedom" with being able to do anything one wants to do (within reason, provided it does not affect those with power from loosing it), the less free we really are, while the more we realize that we are determined by material forces and limits, and in relation to this, by reasonably definable social responsibilities, the more free we really are. That must be what art has been conveying through the ages, this possibility of freedom through necessity. In my subjective opinion, and I may actually be trying to determine what is objectively true, sexuality may ultimately be defined by the mutual love between a man and a woman, and the dedication in sharing a life together, working for a common good, for the family, their new family, their children, and their relations, parents, grandparents, etc., and for society as a whole. In this alienated world of angst and isolation this idea of matrimonial bliss may be nothing but a dream, or a beautiful story in a work of art, while the basis of that sexual unity is reduced to the most basic commodity, retailed in the trade in children, women, and men for sex, in the massive capitalist pornography industry which sells the human body like cheap meat in an equally bland supermarket, all in the name of freedom.