We human beings regard ourselves as (or compare ourselves to) animals only when it suits us.
You will say that that was in the comparatively barbarous times; that these are barbarous times too, because also, comparatively speaking, pins are stuck in even now; that though man has now learned to see more clearly than in barbarous ages, he is still far from having learnt to act as reason and science would dictate.
For many years I have regarded the Pentateuch simply as a record of a barbarous people, in which are found a great number of the ceremonies of savagery, many absurd and unjust laws, and thousands of ideas inconsistent with known and demonstrated facts. To me it seemed almost a crime to teach that this record was written by inspired men; that slavery, polygamy, wars of conquest and extermination were right, and that there was a time when men could win the approbation of infinite Intelligence, Justice, and Mercy, by violating maidens and by butchering babes.