Thus the being and welfare of a man's children or friends, producing constant delight in him, he is said constantly to love them.

But it suffices to note, that our ideas of love and hatred are but the dispositions of the mind, in respect of pleasure and pain in general, however caused in us.
6.

Desire.
The uneasiness a man finds in himself upon the absence of anything whose present enjoyment carries the idea of delight with it, is that we call DESIRE; which is greater or less as that uneasiness is more or less vehement.

Where, by the by, it may perhaps be of some use to remark, that the chief, if not only spur to human industry and action is UNEASINESS.

For whatsoever good is proposed, if its absence carries no displeasure or pain with it, if a man be easy and content without it, there is no desire of it, nor endeavour after it; there is no more but a bare velleity, the term used to signify the lowest degree of desire, and that which is next to none at all, when there is so little uneasiness in the absence of anything, that it carries a man no further than some faint wishes for it, without any more effectual or vigorous use of the means to attain it.