THE DESCENT OF MAN (http://www.gutenberg.org/cache/epub/2300/pg2300.html).

During many years I collected notes on the origin or descent of man, without any intention of publishing on the subject/
This implies that man must be included with other organic beings in any general conclusion respecting his manner of appearance on this earth
The greater number accept the agency of natural selection;
many unfortunately are still opposed to evolution in every form.

I have been led to put together my notes, so as to see how far the general conclusions arrived at in my former works were applicable to man. This seemed all the more desirable as I had never deliberately applied these
views to a species taken singly. When we confine our attention to any one form, we are deprived of the weighty arguments derived from the nature of the affinities which connect together whole groups of organisms—their geographical distribution in past and present times,
and their geological succession. The homological structure, embryological development, and rudimentary organs of a species, whether it be man or any other animal, to which our attention may be directed,
remain to be considered; but these great classes of facts afford, as it appears to me, ample and conclusive evidence in favour of the principle of gradual evolution. The strong support derived from the other arguments should, however, always be kept before the mind.