Nevertheless, if this is so, the mere fact that the tendency towards the family is thus in some respects prior to, and more fundamental than, its antagonist, would indicate that it is based upon biological and psychological conditions and requirements that are correspondingly more primitive and therefore more essential. We have seen in effect that the causes which have led to the strong attachment of the individual to the family are probably connected with certain necessary conditions of human growth and development--the long period of helplessness and immaturity, the dependence upon others (and especially the parents) for the very necessaries of life, the need to learn from others, the need for an early arousal and outward direction of the love impulse, _etc._ The causes which underlie the tendency away from the family--such as the need of casting off the dependence on the family in order to attain a full measure of individuality, the antagonism between the family attachments and the wider social bonds, the value of sexual sublimation for the advance of culture, the possible dysgenic effects of inbreeding--these are in the main connected with less pressing and immediate conditions of existence; conditions which are no doubt of great importance for the ultimate fate of the individual and the race, but which are not essential for the immediate preservation and growth of the individual in his early life, and which frequently involve a diminution rather than an increase in immediate benefit or pleasure; representing, as they do, biological values of a higher and more complex order, which come into operation only when those of a more primitive kind have been attained. [Sidenote: The family attachments must be outgrown rather than destroyed]