Economist master Samuelson said, “In a person’s life, one can never avoid economics.” Economy is closely related to every aspect of life - clothing, food, shelter, and transportation. To understand ourselves, society, and economic principles, we need to grasp knowledge of economics. Especially in this era of great change, it is essential to read classic economic literature. This book carefully selects 30 highly representative classic economic works, categorizing them from eight different perspectives. The wisdom embedded in these economic theories and thoughts holds significant inspirational value for each of us, especially for those involved in economics, guiding us from understanding the subjective and objective world to practical actions.