This document discusses the concepts of the sublime, picturesque, and beautiful in 18th century aesthetics and landscape painting. It provides definitions and perspectives from philosophers Edmund Burke, Immanuel Kant, and William Gilpin on differentiating these concepts. The sublime evokes intense emotions like awe and terror from vast or dynamic qualities of nature. The picturesque referred to landscapes that were varied, textured and worthy of painting. Beauty involved pleasurable emotions from comprehensible natural objects. These concepts influenced landscape painting traditions like the Hudson River School in America.