Plato's idealism ?

Plato's idealism is a philosophical theory that posits the existence of a higher reality or realm of perfect forms or ideas that are more real than the physical world we perceive with our senses. According to Plato, the physical world is merely a reflection or imperfect copy of these ideal forms, which are eternal, unchanging, and perfect. Plato believed that true knowledge and understanding could only be attained by contemplating these ideal forms through reason and philosophical inquiry. This theory has had a significant influence on Western philosophy and has been a central tenet of many philosophical and religious traditions.