To return, however, to the course of his day, immediately after the termination of his dinner party, Kant walked out for exercise; but on this occasion he never took any companion, partly, perhaps, because he thought it right, after so much convivial and colloquial relaxation, to pursue his meditations,[Footnote: Mr. Wasianski is wrong. To pursue his meditations under these circumstances, might perhaps be an inclination of Kant's to which he yielded, but not one which he would justify or erect into a maxim. He disapproved of eating alone, or _solipsismus convictorii_, as he calls it, on the principle, that a man would be apt, if not called off by the business and pleasure of a social party, to think too much or too closely, an exercise which he considered very injurious to the stomach during the first process of digestion. On the same principle he disapproved of walking or riding alone; the double exercise of thinking and bodily agitation, carried on at the same time, being likely, as he conceived, to press too hard upon the stomach.] and partly (as I happen to know) for a very peculiar reason, viz., that he wished to breathe exclusively through his nostrils, which he could not do if he were obliged continually to open his mouth in conversation. His reason for this was, that the atmospheric air, being thus carried round by a longer circuit, and reaching the lungs, therefore, in a state of less rawness, and at a temperature somewhat higher, would be less apt to irritate them. By a steady perseverance in this practice, which he constantly recommended to his friends, he flattered himself with a long immunity from coughs, colds, hoarseness, and every mode of defluxion; and the fact really was, that these troublesome affections attacked him very rarely. Indeed I myself, by only occasionally adopting his rule, have found my chest not so liable as formerly to such attacks.