________________
22
A STUDY IN KARMA
that the sun will rise to-morrow as on countless yesterdays. Succession alone, however, does not necessarily imply causation ; we do not regard day as the cause of night, nor night as the cause of day, because they invariably succeed each other. To assert causation, we need more than invariable succession ; we need that the reason chall see that which the senses are unable to discern
-a relation between the two things which brings about the appearance of the second when the first appears. The succession of day and night is not caused by either; both are caused by the relation of the earth to the sun; that relation is a true cause, recognised as such by the reason, and as long 'as the relation exists unchanged day
and night will be its effect. In order to see one thing as the cause of another, the reason must establish a relation between them which is sufficient for the production of one by the other; then,
