For all the greatness of Democrites in so many ways, I'm always a bit wary of reading too much in classic thinkers predating what we now know about the physical

For all the greatness of Democrites in so many ways, I'm always a bit wary of reading too much in classic thinkers predating what we now know about the physical sciences. Without experiments, introducing the concept of atoms was speculative. Conversely, even today an improved understanding of how matter actually behaves at very small scales, still doesn't make the case for atheism or materialism.