envy. No one must want to put himself forward, every one must be the same and have the same. Social justice means that we deny ourselves many things so that others may have to do without them as well, or, what is the same thing, may not be able to ask for them. This demand for equality is the root of social conscience and the sense of duty. It reveals itself unexpectedly in the syphilitic's dread of infecting other people, which psycho-analysis has taught us to understand. The dread exhibited by these poor wretches corresponds to their violent struggles against the unconscious wish to spread their infection on to other people; for why should they alone be infected and cut off from so much? why not other people as well? And the same germ is to be found in the pretty anecdote of the judgement of Solomon. If one woman's child is dead, the other shall not have a live one either. The bereaved woman is recognized by this wish.
Thus social feeling is based upon the reversal of what was first a hostile feeling into a positively-toned tie of the nature of an identification. So far as we have hitherto been able to follow the course of events, this reversal appears to be effected under the influence of a common tender tie with a person outside the group. We do not ourselves regard our analysis of identification as exhaustive, but it is enough for our present purpose that we should revert to this one