what injures and benefits us; but there is no question but that, with the wonderful idiosyncrasy of human nature on the one side, and the infinite variety in the mode of life and pleasure on the other, it is a wonder that the human race has not worn itself out long ago. Human nature appears to possess a peculiar kind of toughness and many-sidedness, since it subdues everything which approaches it, or which it takes into itself, and, if it cannot assimilate, at least makes it indifferent. In case of any great excess, indeed, it must yield to the elements in spite of all resistance, as the many endemic diseases and the effects of brandy convince us. Could we, without being morbidly anxious, keep watch over ourselves as to what operates favourably or unfavourably upon us in our complicated civil and social life, and would we leave off what is actually pleasant to us as an enjoyment, for the sake of the evil consequences, we should thus know how to remove with ease many an inconvenience which, with a constitution otherwise sound, often troubles us more than even a disease. Unfortunately, it is in dietetics as in morals,—we cannot see into a fault till we have got rid of it; by which nothing is gained, for the next fault is not like the preceding one, and therefore cannot be recognised under the same form.
While I was reading over the letters which had been written to my sister from Leipzig, this remark, among others, could not escape me,—that, from the very beginning of my academical course, I had esteemed myself very clever and wise, since, as soon as I had learned anything, I put myself in the place of the professor, and so became didactic on the spot. I was amused to see how I had immediately applied to my sister whatever Gellert had imparted or advised in his lectures, without seeing, that, both in life and in books, a thing may be proper for a young man without being suitable for a young lady; and we both together made
