previously to all endeavour.  But as a matter of fact causal agents do endeavour to bring about effects, and it is in order not to have to condemn their efforts as altogether useless that we assume the non-existence of the effect previously to its origination.—­Your objection is refuted, we reply, by the consideration that the endeavour of the causal agent may be looked upon as having a purpose in so far as it arranges the causal substance in the form of the effect.  That, however, even the form of the effect (is not something previously non-existing, but) belongs to the Self of the cause already because what is devoid of Selfhood cannot be begun at all, we have already shown above.—­Nor does a substance become another substance merely by appearing under a different aspect.  Devadatta may at one time be seen with his arms and legs closely drawn up to his body, and another time with his arms and legs stretched out, and yet he remains the same substantial being, for he is recognised as such.  Thus the persons also by whom we are surrounded, such as fathers, mothers, brothers, &c., remain the same, although we see them in continually changing states and attitudes; for they are always recognised as fathers, mothers, brothers, and so on.  If our opponent objects to this last illustrative example on the ground that fathers, mothers, and so on remain the same substantial beings, because the different states in which they appear are not separated from each other by birth or death, while the effect, for instance a jar, appears only after the cause, for instance the clay, has undergone destruction as it were (so that the effect may be looked upon as something altogether different from the cause); we rebut this objection by remarking that causal substances also such as milk, for instance, are perceived to exist even after they have entered into the condition of effects such as curds and the like (so that we have no right to say that the cause undergoes destruction).  And even in those cases where the continued existence of the cause is not perceived, as, for instance, in the case of seeds of the fig-tree from which there spring sprouts and trees, the term ‘birth’ (when applied to the sprout) only means that the causal substance, viz. the seed, becomes visible by becoming a sprout through the continual accretion of similar particles of matter; and the term ‘death’ only means that, through the secession of those particles, the cause again passes beyond the sphere of visibility.  Nor can it be said that from such separation by birth and death as described just now it follows that the non-existing becomes existing, and the existing non-existing; for if that were so, it would also follow that the unborn child in the mother’s womb and the new-born babe stretched out on the bed are altogether different beings.

It would further follow that a man is not the same person in childhood, manhood, and old age, and that terms such as father and the like are illegitimately used.—­The preceding arguments may also be used to refute the (Bauddha doctrine) of all existence being momentary only[300].