By attention to these rules of his, Kant managed to keep both body and mind in a working order, more uninterrupted than is usual with men who go through much intellectual labor. The solitary objection to his system is the excessive regularity of habit to which it bound him by chains of his own forging. He found a quiet happiness in this regularity; indeed, happiness is said to be more commonly found in habit that in anything else, so deeply does it satisfy a great permanent instinct of our nature. But a _minute_ regularity of habit is objectionable, because it can only be practicable at home, and is compatible only with an existence of the most absolute tranquillity. Kant did not travel, and never could have travelled. He was a bachelor, and could not have ceased to be a bachelor, without a disturbance that would have been intolerable to him. He enjoyed the full benefits of his system without experiencing its disadvantages, but any considerable change of situation would have made the disadvantages apparent. Few lives can be so minutely regulated without risk of future inconvenience. Kant's example is a good one so far as this, that it proved a sort of independence of character which would be valuable to every student. All who need to keep their minds in the best possible condition ought to have resolution enough to regulate their living in a manner which experience, in their case, proves to be most favorable. Whatever may be the authority of custom, a wise man makes himself independent of usages which are impediments to his best activity. I know an author who was always unwell about eleven o'clock in the morning--so unwell that he could do nothing but lament his miserable fate. Knowing by experience the powerful effect of regimen, I inquired whether he enjoyed his breakfast. "No, he did not." "Then why did he attempt to eat any breakfast?" It turned out that this foolish man swallowed every morning two cups of bad coffee and a quantity of greasy food, from a patriotic deference to the customs of his country. He was persuaded to abandon this unsuitable habit and to eat nothing till half-past ten, when his adviser prescribed a well-cooked little _déjeuner à la fourchette_, accompanied by half a bottle of sound Bordeaux. The effect was magical. My friend felt light and cheerful before _déjeuner_, and worked quite happily and well, whilst after _déjeuner_ he felt like a horse that has eaten his corn. Nor was the good effect a transitory one; the bad symptoms never returned and he still adheres to his new arrangement. This little reform made a wretched existence happy, and has had for its result an increase in production with a diminution of fatigue. The explanation is that the stomach did not ask for the early breakfast, and had a hard fight to overcome it, after which came exhaustion and a distaste both for food and work. There are cases where an opposite rule is the right one. An Englishman living in Paris found the French