In his early youth he read eagerly and thoroughly such few books as came in his way. Later, his taste for reading seemed to grow less. He had a keen instinct for reality, and perhaps he found little in books that satisfied him. For poetry and philosophy he had small aptitude, and in science he had no training. What books he read he seemed to digest and get the pith of. Once, made suddenly conscious by defeat of his lack of book-culture, he took up Euclid's geometry, and resolutely studied and re-studied it. Doubtless that helped him in the close logic which often characterized his speeches. The strength of his speeches lay in their logic, their close regard to fact, their adaptation to the plain people of whom he was one, their homely illustrations, and, as the years developed him, an appeal to some high principle of duty. His chief library was men and women. From them, and from his own experience, he drew the elements of his politics, history, philosophy. He had the ambition natural to a man of high powers. With all his genial sociability, he was in a way self-centered. His associates often thought him,--and Lamon shares the opinion--not only moody and meditative, but unsocial, cold, impassive; bent on his own ends, and using other men as his instruments. Partly we may count this as the judgment of the crowd to whom Lincoln's inner life was unimaginable. He shared their social hours, and then withdrew into thoughts and feelings and purposes which he could share with no one. Doubtless, too, he was in fault for some of that neglect of the small courtesies and kindnesses which besets men whose own thoughts fascinate them too strongly. There is a graphic touch, in the story of his love affairs, of a girl who rejected his advances because she had seen him on a hot day walk up a hill with a woman and never offer to relieve her of the baby she was carrying. As a lawyer he won more than ordinary success, making good his lack of erudition by shrewdness and knowledge of human nature. It was observed that he always tried a case honestly and fairly; that he was not fond of controversy, and always preferred to settle a case out of court; that he never argued well or strongly unless his conviction was fully on his client's side; that, if unconvinced himself, he simply brought forward the proofs which fairly counted on his side, and left the decision to others; and that he was so little attentive to gain that, although he became one of the leading lawyers of Illinois, he never accumulated much money.