Parmenides is regarded to be present in the era earlier than Socrates. This places Pamenides’ birth later in the sixth century between 515-10 BC. He lived in Greek city, Elea which is in southern Italy. The philosophies of Parmenides are referred to as Eleatic philosophy sometimes. He composed a poem called as On Nature which is base on philosophy and expresses his views about being. A major part of this poem of his has been quoted in the works of other individuals. Without a direct access to history, the reconstruction of this poem shows a path to the philosophical method of Parmenides and also the outcomes of applying them. 

Parmenides’ Method:-
His poetry, On Nature, suggests that the philosophical method of Parmenides is likely to be an ancient form of what we call today as rationalism. Like all the people who believe in rationalism, Parmenides makes an assumption that any proposition that has a logical necessity or it provides an evident about it is supposed to be accepted as truth. By logical necessity or self-evidence of a proposition, Parmenides means that the proposition cannot be denied at all without contradiction it with absolute proof. Such kinds of propositions are defined an innate truth according to him. An epistemological priority is always present over any proposition that is necessary logically, over any other proposition that concerns Being and is devised from a sensible data; then no matter how odd the world of common sense may it to be, precedence is what should always be taken by a necessary proposition.

On Nature – His Work of Poetry:-
Parmenides' poetry differentiates specifically between two ways; one is the way of Truth and the other is the way of opinion. Obviously, the correct way is the way of truth which highlights the understanding of Being correctly, whereas the view of majority of people which is thought to be illusory even if it is useful is the way of opinion. The fact that makes the latter way as illusory is; a naive acceptance of testimony of senses has been done by its proponents. Speaking in other arrangement of words, it is wrongly assumed that Being is like it appears to be. It becomes quite essential to complete the gaps in Parmenides' arguments in some cases.

Descriptions: This article is about an ancient Greek philosopher, Parmenides who is known for his method of rationalism and his poetry called as On Nature.