"Essays Concerning Human Understanding, Volume 1 MDCXC, Based on the 2nd Edition, Books 1 and 2" is a huge work by the famous philosopher John Locke, which examines the origin and scope of human knowledge. In this book, the author addresses questions related to the nature of the mind, exploring the ways in which a person acquires knowledge about the world around him. Locke divides all knowledge into two categories: knowledge gained through experience and knowledge gained through reason. In the book "Essay on Human Understanding", the author analyzes the structure of the mind and the mechanisms of its functioning, trying to reveal and clarify the nature of human knowledge. The book is not only an important work of philosophy, but also a contribution to the development of modern psychology and epistemology. "Essays on Human Understanding, Volume 1 MDCXC" remains relevant to this day, prompting readers to rethink their understanding of the nature of knowledge and reason."