Book 4 (Part II)

55 has not yet attained the strength which can defy Mara. Let him estimate his strength, and take a vow which is within it, but only just within it. Thus Milo began by carrying a new-born calf; and day by day as it grew into a bull, his strength was found sufficient. Again let it be said that Liber III is a most admirable method for the beginner,' and it will be best, even if he is very confident in his strength, to take the vow for very short periods, beginning with an hour and increasing daily by half-hours until the day is filled. Then let him rest awhile, and attempt a two-day practice; and so on until he is perfect. He should also begin with the very easiest practices. But the thing which he is sworn to avoid should not be a thing which normally he would do infrequently ; because the strain on the memory which sub- serves his vigilance would be very great, and the practice become difficult. It is just as well at first that the pain of his arm should be ^This book must be carefully read. Its essence is that the pupil swears to refrain from a certain thought, word, or deed; and on each breach of the oath, cuts his arm sharply with a razor. This is better than flagellation because it can be done in public, without attracting notice. It however forms one of the most hilariously exciting parlour games for the family circle ever invented. Friends and relations are always ready to do their utmost to trap you into doing the forbidden thing.