This short book, written by Henry Hazlitt, is one of the most concise yet easily comprehensible introduction to sound economics ever written. Hazlitt has the ability to take a commonly accepted idea and then to prompt the reader to think about that accepted idea, eventually showing that what may be commonly accepted is also thoroughly nonsensical. Though it was written in 1946, the vast majority of the fallacies which Hazlitt explodes are still commonly accepted today, and virtually everyone has something they need to learn from it.
Read it here: Economics in One Lesson.
