These arguments do not appear to us decisive; and we have already answered them. We cannot, of course, create within ourselves sentiments which do not already exist. But we can cultivate or allow to die out sentiments which do exist within us naturally. The degree of sensibility in each individual depends, I admit, on his or her peculiar constitution of mind and heart; but it depends on us to reach the highest degree of sensibility we are capable of. For example, he who leaves his children or removes them from him (unless it be for their good[78]) may be certain that the love he bears them will insensibly die out. He, on the contrary, who takes the trouble to busy himself with his children, to win their love by intelligent and constant attentions, will necessarily feel his heart grow softer by this intercourse, and his natural feelings will gain more and more strength. But if it is a duty to love one's children, it is also in consequence of this duty that one should love them for themselves, and not for one's self. It is not our happiness we should seek in our children, but theirs; and for this reason does it sometimes become necessary to govern one's own sensibility, and deny children pleasures detrimental to their best interests. The excess of tenderness is often, as has been said, but a want of tenderness; it is a sort of delicate selfishness, shrinking from the pain the seeming suffering of the children might inflict, and not knowing how to refuse them any thing for fear of displeasing them, prepares for them in this manner cruel deceptions against the time when they will have to face the sad realities of life. A corollary of what precedes, is that the father should love all his children equally, and guard against showing a preference. He should have no favorites among them, still less victims. He should not, from feelings of family pride, prefer the boys to the girls, or the oldest to the youngest. He should not even yield to the natural predilection which inclines us to give our preference to the most amiable, the most intelligent, the most attractively endowed. It has often been observed that mothers have a particular tenderness for the feeblest of their children, or those that have given most trouble. If preference is at all justifiable it is in this case. After having established the general principle of the duties of the head of a family, namely, love, and an equal love, for all his children, let us consider the particular duties this general duty comprises. They bear upon two principal points: the preservation and the education of the children. We have seen that the fact of giving life to children, carries with it as an inevitable consequence the duty of preserving it to them. The child not being able to provide its own food, the parents must furnish it: this results from the very nature of things.