In this way my preparation for college went on without interruption. I found it much easier and pleasanter to be taught by myself than to receive instruction in class. There was no hurry, no confusion. My tutor had plenty of time to explain what I did not understand, so I got on faster and did better work than I ever did in school. I still found more difficulty in mastering problems in mathematics than I did in any other of my studies. I wish algebra and geometry had been half as easy as the languages and literature. But even mathematics Mr. Keith made interesting; he succeeded in whittling problems small enough to get through my brain. He kept my mind alert and eager, and trained it to reason clearly, and to seek conclusions calmly and logically, instead of jumping wildly into space and arriving nowhere. He was always gentle and forbearing, no matter how dull I might be, and believe me, my stupidity would often have exhausted the patience of Job.