(M300) Thus far we have considered what may be said for the theory that at the European fire-festivals the fire is kindled as a charm to ensure an abundant supply of sunshine for man and beast, for corn and fruits. It remains to consider what may be said against this theory and in favour of the view that in these rites fire is employed not as a creative but as a cleansing agent, which purifies men, animals, and plants by burning up and consuming the noxious elements, whether material or spiritual, which menace all living things with disease and death. (M301) First, then, it is to be observed that the people who practise the fire-customs appear never to allege the solar theory in explanation of them, while on the contrary they do frequently and emphatically put forward the purificatory theory. This is a strong argument in favour of the purificatory and against the solar theory; for the popular explanation of a popular custom is never to be rejected except for grave cause. And in the present case there seems to be no adequate reason for rejecting it. The conception of fire as a destructive agent, which can be turned to account for the consumption of evil things, is so simple and obvious that it could hardly escape the minds even of the rude peasantry with whom these festivals originated. On the other hand the conception of fire as an emanation of the sun, or at all events as linked to it by a bond of physical sympathy, is far less simple and obvious; and though the use of fire as a charm to produce sunshine appears to be undeniable,(857) nevertheless in attempting to explain popular customs we should never have recourse to a more recondite idea when a simpler one lies to hand and is supported by the explicit testimony of the people themselves. Now in the case of the fire-festivals the destructive aspect of fire is one upon which the people dwell again and again; and it is highly significant that the great evil against which the fire is directed appears to be witchcraft. Again and again we are told that the fires are intended to burn or repel the witches;(858) and the intention is sometimes graphically expressed by burning an effigy of a witch in the fire.(859) Hence, when we remember the great hold which the dread of witchcraft has had on the popular European mind in all ages, we may suspect that the primary intention of all these fire-festivals was simply to destroy or at all events get rid of the witches, who were regarded as the causes of nearly all the misfortunes and calamities that befall men, their cattle, and their crops.(860)