Having given this illustrative case, I must not omit to state that similar incidents may, of course, occur from time to time in connexion with the coeducation of children. But we must avoid the error of attributing to external chance-influences, such as coeducation, occurrences which are dependent upon the very nature of human beings; for such things happen whatever method of education be adopted. Naturally, the difference between the sexes must not be ignored; but in children the existence of sexual differentiation must not be incessantly and anxiously emphasised. Brothers and sisters, when they have reached a certain age, should certainly not be placed naked together in a bath. But this is to be avoided, not for fear lest thereby sexual excitement might result in the children, but because to do so would be in opposition to the customs of our time, and it is precisely by such contrasts with generally accepted customs, that the attention of children is aroused. Further, we may approve of the fact that in consequence of the movement for child-protection (_Kinderschutz_), the misuse of children in various ways--in the theatre, for example--has undergone a notable diminution. But in this matter also, the decisive factor is not exclusively the interest of sexual morality, but rather the rights of the children themselves. The same consideration applies, in part, to an earlier movement. In France, in the year 1848, the appearance of children on the stage was legally prohibited, one reason alleged for this enactment being the moral dangers resulting from the mixing of the sexes in such conditions, but reference was also made more particularly to the need for the better protection of the physical and mental powers of the children.[138] I come now to the description of certain other mental influences necessary for the child. A very important point is that we should use our utmost endeavours to divert the child from the sexual impulse. The more the awakening of this impulse threatens to force itself upon the child's attention, the more necessary is it to bring into play the measured activity of other faculties and interests. We think here as much of methods of aesthetic culture, reading, and the theatre, as of bodily sports and games. At the same time, it must be our aim to cultivate the general strength of the will, since this is needed alike for the control of the sexual impulse, and for the overcoming of other temptations and passions. The general moral education of the child, the formation of its character, and the encouragement of a pursuit of ideal aims, are all also of the greatest possible importance in relation to sexual education. Nothing is better adapted to ensure personal happiness and a high moral standard, than the inculcation of idealism, which must on no account be confused with aloofness from the everyday affairs of the world.