Explaining the Cosmos

Graham offers a fresh account of how Greek thinkers working before Socrates approached the natural world. Rather than treating their ideas as a loose collection of rival schools and manners of reasoning, he traces a coherent Ionian line of inquiry that shaped most of the period's debates.

He challenges two familiar readings. The first casts the earliest Ionians as thinkers who reduced everything to one underlying material. The second portrays their successors as scrambling to rescue natural philosophy from the objections raised by Parmenides. Graham instead argues that Parmenides helped drive the scientific arguments of the fifth century BC forward.

On this view, the story of pre-Socratic thought is one of steady theoretical progress that opened the way to empirical findings, not a record of arguments that repeatedly collapsed. Graham also contends that the Ionian tradition laid the groundwork for the scientific picture of the world that people still hold today.