• Parmenides was a pre-Socratic Greek philosopher who was intrigued by existence and reality.
• He eventually came to the following conclusion.

1. Nothing can be made from nothing.
2. Change requires that something comes out of nothing.
3. Change is impossible as true change does not exist.
4. That, which is, is eternal and immutable. That which is not, never is.
5. If these assumptions are true then our senses must be wrong, as they do not confirm to this logical conclusion. In reality, world is not what it seems, and can only be comprehended through reason.