One can imagine that some automatic tendency in biology might work for giving us longer and longer noses.

But the question is, do we want to have longer and longer noses?
I fancy not; I believe that we most of us want to say to our noses, "Thus far, and no farther; and here shall thy proud point be stayed": we require a nose of such length as may ensure an interesting face.

But we cannot imagine a mere biological trend towards producing interesting faces; because an interesting face is one particular arrangement of eyes, nose, and mouth, in a most complex relation to each other.
Proportion cannot be a drift: it is either an accident or a design.

So with the ideal of human morality and its relation to the humanitarians and the anti-humanitarians.

It is conceivable that we are going more and more to keep our hands off things: not to drive horses; not to pick flowers.