"Ancient Greek Philosopher-Scientists" delves into the groundbreaking ideas of the Pre-Socratic philosophers, who were the first in the Western world to seek rational explanations for natural phenomena, moving away from traditional religious narratives. This collection presents the surviving fragments and testimonials about ten influential thinkers, underscoring their role as the foundational figures of philosophy and the sciences. Their inquiries into the nature of existence and the cosmos continue to resonate today, reminding us of the enduring quest for knowledge and understanding that defines human thought.