Context:

Mentioned as Darwin's 1871 book that advanced the theory that humans, like all animals, are a product of evolution - the theory he had been too nervous to include in Origin of Species

Context:

Tom quotes from this book at the opening, explaining it's the book in which Darwin 'famously points out that man too is an ape'

Context:

Tom Holland references Darwin going on to talk about human evolution in 'the sense of man' (likely meaning The Descent of Man, and Selection in Relation to Sex), noting that in The Origin of Species Darwin 'famously does not talk about human evolution' but then goes on in this later work to address it. Mentioned briefly in the context of how the Neanderthal discovery fed into debates about human evolution and scientific racism.