But the two, though they may often--perhaps generally--exist together, are in their nature so essentially different that they may be entirely separated, and we may have one in its full strength while there is very little of the other.

You may love a person in the sense of taking greater pleasure in receiving attentions and favors from him than from all the world beside, while yet you seldom think of making efforts to promote his comfort and happiness in any thing in which you are not yourself personally concerned.

On the other hand, you may love him with the kind of affection which renders it the greatest pleasure of your life to make sacrifices and endure self-denial to promote his welfare in any way.
In some cases these two forms are in fact entirely separated, and one or the other can exist entirely distinct from the other--as in the case of the kind feelings of a good man towards the poor and miserable.

It is quite possible to feel a very strong interest in such objects, and to be willing to put ourselves to considerable inconvenience to make them comfortable and happy, and to take great pleasure in learning that our efforts have been effectual, without feeling any love for them at all in the other form--that is, any desire to have them with us, to receive attentions and kindness from them, and to enjoy their society.
On the other hand, in the love of a young child for his mother the case is reversed.

The love of the child consists chiefly in liking to be with his mother, in going to her rather than to any one else for relief from pain or for comfort in sorrow, and is accompanied with very few and very faint desires to make efforts, or to submit to privations, or to make sacrifices, for the promotion of her good.
_Order of their Development_.
Now the qualities and characteristics of the soul on which the capacity for these two forms of love depend seem to be very different, and they advance in development and come to maturity at different periods of life; so that the mother, in feeling dejected and sad because she can not awaken in the mind of her child the gratitude and the consideration for her comfort and happiness which she desires, is simply looking for a certain kind of fruit at the wrong time.