Reading is Hardwork

"The most direct sign that you have done the work of reading is fatigue. Reading that is reading entails the most intense mental activity. It you are not tired out, you probably have not been doing the work... I often cannot read more than a few hours at a time, and I seldom read much in that time. I usually find it hard work and slow work. There may be people who can read quickly and well, but I am not one of them. The point about speed is irrelevant. What is relevant is activity."

~ Mortimer Adler

How to Read a Book