The island of Dr. Moreau, part cautionary tale of scientists 'playing God' by intervening with Darwins' 'Theory of evolution'; part moral mirror reflecting the animalistic side within us all.
"Very much indeed of what we call moral education is such an artificial modification and perversion of instinct; pugnacity is trained in to courageous self-sacrifice, and suppressed sexuality in to religious emotion."
Wells reminds us of our deepest fears, what we inherently know to be true, things we see all around us in those that have not been 'adapted' to moral sensibilities of society, that we are all beasts, trained to be 'civil' in polite society, but we can see in others and ourselves, that we are at heart animals and without constant attendance, training and correction, we are all capable of nature reverting us to our more base animal instincts.
However, all is not lost, there is a prescriptive, one of which is to seclude ourselves and surround ourselves with books of wisdom and devote our days to reading. I have found this prescription most efficacious in myself.