Man in his arrogance thinks himself a great work, worthy of the interposition of a deity. More humble, and I believe truer, to consider him created from animals.
In the struggle for survival, the fittest win out at the expense of their rivals because they succeed in adapting themselves best to their environment.
Nothing is easier than to admit in words the truth of the universal struggle for life, or more difficult, at least I have found it so – than constantly to bear this conclusion in mind.
It strikes me that all our knowledge about the structure of our Earth is very much like what an old hen would know of the hundred-acre field in a corner of which she is scratching.
