[colorado tanker]

Actually, Darwin didn't address the origin of life, just the origin of species.

[NightOfTheLivingDems]

He delved into the origin of life with later books.

Then went to tend his garden.

[AndyTheBear]

Actually, Darwin didn't address the origin of life, just the origin of species.

Can you have life without at least one species?

But your right in that his famous theory is about common origin rather than the source of that first species. However, I've read where actually did address the idea of the origin of life, he just had no idea how it could be treated as a scientific theory. He essentially just presumed it somehow emerged from the muck. I have the impression that it wasn't a subject he wrote on often because he didn't want to be labeled a kook by revealing he was a naturalist.