I grant that at first sight it seems very unjust, that the parents should have the fun and the children be punished for it, but young people should remember that for many years they were part and parcel of their parents and therefore had a good deal of the fun in the person of their parents. If they have forgotten the fun now, that is no more than people do who have a headache after having been tipsy overnight. The man with the headache does not pretend to be a different person from the man who got drunk, and claim that it is his self of the preceding night and not his self of this morning who should be punished; no more should offspring complain of the headache which it has earned when in the person of its parents, for the continuation of identity, though not so immediately apparent, is just as real in one case as in the other. What is really hard is when the parents have the fun after the children have been born, and the children are punished for this.
– Samuel Butler