Plato’s Theory of Forms Explored

nasiraijaz December 9, 2025

0 99 5 minutes read

Plato says that real world is the World of Forms, and the world we perceive is unreal

By Riaz Bhatti

Greek Philosopher Plato presented his famous theory of forms. Forms or Ideas are eternal and perfect beings and things in this world are imperfect copies of these forms. Plato’s Theory of Forms explains that there is a realm of perfect, unchanging, and eternal Forms (also known as Ideas) that are the true essence of things, while the physical world we experience is an imperfect copy of this realm of forms. What actually forms are in the opinion of Plato. Forms are properties. What kind of properties forms are. There is form of Justice, good, and beauty. There are infinite kind of forms like forms roundness, form of square, form of redness, form of table or form of horse. Every quality/property (like good or just) or entity (like horse or table) are examples of forms. Beauty or being beautiful, largeness or being large are forms. Forms are Universal and they are different from particular things. Like a beautiful table is not itself a Form. It possesses Form of beauty. This is actually the difference between Universals and particulars. Forms are Universals and particular things possess those qualities contained by forms. A beautiful flower possesses form of beauty. One thing can possess multiple forms. For instance, a brown young horse which is a particular which possesses universal forms of brownness, form of youth and form of being horse. Forms are absolutes and unchangeable. Like form of justice and form of beauty are absolutes, but a just king or a beautiful tree are particulars which are not absolute like forms are. They are called copies or particulars of forms and they contain just part of those perfect forms.

According Plato, the highest form among all the forms is the form of good. Form of good is like a Sun which illuminates all other forms and objects of knowledge. Good gives all other forms being and makes them knowable. From the good, things that are just and true gain their usefulness and value. Plato suggests that ultimate purpose of knowledge or any endeavor is to avail good and justice, truth, equality, beauty and many other forms ultimately are derived from the form of good.

Plato says that real world is the World of forms and the world we perceive is unreal. We are like prisoners confined to cave which perceive shadows of caravans passing by due to sunlight on the internal wall of cave. In the same way in this world we perceive just shadows of real entities and real entities are forms of things which exist in some other world. The cave simile in Republic offers perspective on the idea of forms. It conveyed the very powerful picture describing transition from imprisonment to freedom, darkness to light, images to reality and artificial things to natural things. Here according to Plato, in ordinary life we feel to have knowledge of things, but we are massively ignorant, not even having a conception of what are the proper objects of knowledge or forms.

A vital point is to understand that for Plato’s forms are real. The forms of Good, Justice, Horse or Human and so on exist in reality. They are not mere concepts or thoughts or anything just in our minds. They are objects that mind can grasp, but they eternally exist in reality even if we never come to know them. Forms are distinct from particular things. But Plato goes further and claims that they would exist even without there being any particular examples of them. Form of beauty is not only distinct from particular beautiful things, but according to Plato exists even if there are no beautiful things.

Plato’s teacher Socrates was interested in defining concepts like justice and beauty. This led Plato to search for perfect, absolute and eternal forms of the concepts like beauty, justice and so on. Socrates’ desire for universal definitions laid the ground work for Plato’s theory of forms.

Aristotle reports that the theory of forms had its origin in a Heraclitan view of the world, according to which there was always change and never permanent or genuine being. Heraclitus thought that everything changes and things possess even opposite aspects. There is famous idea attributed to Heraclitus that he said that if we put feet second time in river then that river must be a different river. Aristotle explains: as Heraclitus said that all perceptible things are always in flux and there is no knowledge of things in flux, so that if there is to be knowledge of anything, or understanding, there must be some other permanent kinds of things over and above perceptible things. The thought is that if the world we perceive with our senses is constantly changing, and if knowledge requires some stable objects, then there can be knowledge only if there are stable objects beyond the world we perceive. When Plato is arguing that forms must be distinct from other things he often makes use of examples like those found in Heraclitus where one particular or thing has two opposite properties, either through changing over time or through having different aspects at the same time. Plato talks about things being both just and unjust, good or bad or large and small. On the other hand, forms are pure beings and they possess such pure quality which forms possess. The form of beauty possesses only form of beauty except any other quality. But particulars like beautiful black horse possesses multiple qualities like quality of being beautiful, quality of being black or quality of being horse. A large brown round table possesses forms of being table, form of being brown, forms of being round and being large.

Forms have being also in the sense that they exist, and never do not exist like Parmenides’ being they did not come into existence, will not go out of existence and never change into any other than themselves. In the same way, Plato’s forms only exist and never do not exist. They do not have any origin and end. Each form is one, not many and world we perceive, on the other hand, is full of multiplicity, change, mixed opposites and things passing away. Moreover, Plato seemed to be influenced by idea of Parmenides that appearance perceived by senses is unreal. Parmenides suggested that there is clear distinction between appearance and reality. So Plato seem to have gotten idea of Forms and particulars too from Parmenidean idea of reality and appearance. Forms are not only Universal properties of things, but they are also paradigms or perfection of that property. Form of justice is both the Universal property of Justice and Paradigm and most perfect form of Justice.

Theory of forms had many implications like it influenced Christian theology. The concept of higher reality in Plato’s theory of forms influenced later Philosophical ideas and Christian theology. As Plato’s forms can be understood by intellectual understanding, Plato shifted the focus from empirical observation to intellectual understanding. Plato’s forms also influenced medieval Philosophers who tried to reconcile theory of forms with Christian theology. Modern Philosopher Kant was also influenced by Plato’s idea of forms when they explained relationship between reason and experience.

(Writer followed University of London Philosophy syllabus and also used various internet sources like YouTube lectures & encyclopedias while writing this article)