We know: of course, with regard to the market and similar social structures, a great many facts which we cannot measure and on which indeed we have only some very imprecise and general information. ↗
Wars will remain while human nature remains. I believe in my soul in cooperation, in arbitration; but the soldier's occupation we cannot say is gone until human nature is gone. ↗
Think you of the fact that a deaf person cannot hear. Then, what deafness may we not all possess? What senses do we lack that we cannot see and cannot hear another world all around us? ↗