There are few positions in life in which difficulties have not to be encountered. These difficulties are, however, our best instructors, as our mistakes often form our best experience. We learn wisdom from failure more than from success. We often discover what will do by finding out what will not do. My dad used to say that he had become all the better acquainted with the country from having the good luck sometimes to lose his way. Great thoughts, discoveries, inventions have very generally been nurtured in hardship, often pondered over in sorrow and established with difficulty.