BOOK VII. I. Be of good cheer, my Liberalis: "Our port is close, and I will not delay, Nor by digressions wander from the way." This book collects together all that has been omitted, and in it, having exhausted my subject, I shall consider not what I am to say, but what there is which I have not yet said. If there be anything superfluous in it, I pray you take it in good part, since it is for you that it is superfluous. Had I wished to set off my work to the best advantage, I ought to have added to it by degrees, and to have kept for the last that part which would be eagerly perused even by a sated reader. However, instead of this, I have collected together all that was essential in the beginning; I am now collecting together whatever then escaped me; nor, by Hercules, if you ask me, do I think that, after the rules which govern our conduct have been stated, it is very much to the purpose to discuss the other questions which have been raised more for the exercise of our intellects than for the health of our minds. The cynic Demetrius, who in my opinion was a great man even if compared with the greatest philosophers, had an admirable saying about this, that one gained more by having a few wise precepts ready and in common use than by learning many without having them at hand. "The best wrestler," he would say, "is not he who has learned thoroughly all the tricks and twists of the art, which are seldom met with in actual wrestling, but he who has well and carefully trained himself in one or two of them, and watches keenly for an opportunity of practising them. It does not matter how many of them he knows, if he knows enough to give him the victory; and so in this subject of ours there are many points of interest, but few of importance. You need not know what is the system of the ocean tides, why each seventh year leaves its mark upon the human body, why the more distant parts of a long portico do not keep their true proportion, but seem to approach one another until at last the spaces between the columns disappear, how it can be that twins are conceived separately, though they are born together, whether both result from one, or each from a separate act, why those whose birth was the same should have such different fates in life, and dwell at the greatest possible distance from one another, although they were born touching one another; it will not do you much harm to pass over matters which we are not permitted to know, and which we should not profit by knowing. Truths so obscure may be neglected with impunity. [Footnote: The old saying, 'Truth lurks deep in a well (or abyss).'] Nor can we complain that nature deals hardly with us, for there is nothing which is hard to discover except those things by which we gain nothing beyond the credit of having discovered them; whatever things tend to make us better or happier are either obvious or easily discovered. Your mind can rise superior to the