In The Search after this way it will be seen, as we shall explain below, that love and hatred are the two parent passions and that the only general passions they produce are desire, joy, and sadness, that the particular passions are composed only of these three primitive passions, and that they are compounded to the extent to which the principal idea of good or evil exciting them is accompanied by a greater number of ancillary ideas, or that the good and evil in question are more specified in relation to us.