Sir

I have taken the liberty to send you, as a mark of my respect, a copy of my work (as yet only an abstract) on the Origin of Species.— As it is evident from your great work on Palæontology¹ that you have profoundly reflected on this subject,² I have thought that you might perhaps like to read my book, which I venture to assure you is the result of long-continued & conscientious labour.— I beg you not to think me so presumptuous as to suppose that my work will alter your general conclusions; but it may possibly lead you to reflect further on the side opposed to your view. If you should be induced to read my volume, I venture to state, that it is so much condensed, that it will not be intelligible, unless it be read straight through.—

With much respect & with apologies for troubling you with this note, which does not require any answer, I have the honour to remain | Sir | Your faithful servant | Charles Darwin