There is nothing to wonder at therefore if the dreams of a great number of people bring to light the wish for the removal of their parents, especially of the parent whose sex is the same as the dreamer’s. We may assume that the wish exists in waking life as well, sometimes even in consciousness if it can disguise itself behind another motive, as the dreamer in our third example disguised his real thought by pity for his father’s useless suffering. It is but rarely that hostility reigns alone,—far more often it yields to more tender feelings which finally suppress it, when it has to wait in abeyance till a dream shows it, as it were, in isolation. That which the dream shows in a form magnified by this very isolation resumes its true proportions when our interpretation has assigned to it its proper place in relation to the rest of the dreamer’s life. (H. Sachs.) But we also find this death-wish where there is no basis for it in real life and where the adult would never have to confess to entertaining it in his waking life. The reason for this is that the deepest and most common motive for estrangement, especially between parent and child of the same sex, came into play in the earliest years of childhood. I refer to that rivalry of affections in which sexual elements are plainly emphasized. The son, when quite a little child, already begins to develop a peculiar tenderness towards his mother, whom he looks upon as his own property, regarding his father in the light of a rival who disputes this sole possession of his; similarly the little daughter sees in her mother someone who disturbs her tender relation to her father and occupies a place which she feels she herself could very well fill. Observation shows us how far back these sentiments date, sentiments which we describe by the term _Oedipus complex_, because in the Oedipus myth the two extreme forms of the wishes arising from the situation of the son—the wish to kill the father and to marry the mother—are realized in an only slightly modified form. I do not assert that the Oedipus complex exhausts all the possible relations which may exist between parents and children; these relations may well be a great deal more complicated. Again, this complex may be more or less strongly developed, or it may even become inverted, but it is a regular and very important factor in the mental life of the child; we are more in danger of underestimating than of overestimating its influence and that of the developments which may follow from it. Moreover, the parents themselves frequently stimulate the children to react with an Oedipus complex, for parents are often guided in their preferences by the difference in sex of their children, so that the father favours the daughter and the mother the son; or else, where conjugal love has grown cold, the child may be taken as a substitute for the love-object which has ceased to attract.