Master those books you have. Read them thoroughly. Bathe in them until they saturate you. Read and reread them…digest them. Let them go into your very self. Peruse a good book several times and make notes and analyses of it. A student will find that his mental constitution is more affected by one book thoroughly mastered than by twenty books he has merely skimmed. Little learning and much pride comes from hasty reading. Some men are disabled from thinking by their putting meditation away for the sake of much reading. In reading let your motto be “much not many.” 
– Charles H. Spurgeon, Lectures to My Students