The Wealth of Nations

The Wealth of Nations, is the magnum opus of the Scottish economist and moral philosopher Adam Smith. First published in 1776, the book offers one of the world's first collected descriptions of what builds nations' wealth and is today a fundamental work in classical economics. Through reflection over the economics at the beginning of the Industrial Revolution the book touches upon such broad topics as the division of labour, productivity and free markets.
The Wealth of Nations is a clearly written account of economics at the dawn of the Industrial Revolution. The book was a landmark work in the history and economics as it was comprehensive and an accurate characterization of the economic mechanisms at work in modern economics. Smith believed in a Meritocracy. Smith emphasized the advancement that one could take based on their will to better themselves.
This is simply one of the most important books ever written on the subject of economics.