“One of the most helpful discoveries I have made is how much can be read in disciplined blocks of twenty minutes a day. Suppose that you read slowly, say about 250 words a minute (as I do). This means that in twenty minutes you can read about five thousand words. An average book has about four hundred words to a page. So you could read about twelve-and-a-half pages in twenty minutes. Suppose you discipline yourself to read a certain author or topic twenty minutes a day, six days a week, for a year. That would be 312 times 12.5 pages for a total of 3,900 pages. Assume that an average book is 250 pages long. This means you could read fifteen books like that in one year.”
~ John Piper (HT: Girl Talk)