Aristotle placed him among the pre-Socratic natural philosophers.

"Empedocles" was named after the famed Greek pre-Socratic philosopher of the same name.

The episode takes its title from the famed Greek pre-Socratic philosopher of the same name.

The pre-Socratic philosophers, starting with Thales, noted that appearances change quite a bit and began to ask what the thing changing "really" is.

Other pre-Socratic philosophers had different theories of the apeiron.

Like the pre-Socratic philosophers, Khlebnikov felt that there is a single supersubstance.

The Eleatics were a school of pre-Socratic philosophers.

One of his main views was a "theory of infinite worlds" which for him was developed by pre-socratic philosophers.

It confirms that pre-Socratic philosophers were making an early effort to demythify physical processes.

Parmenides is one of the most significant of the pre-Socratic philosophers.