To suppose that the eye with all its inimitable contrivances for adjusting the focus to different distances, for admitting different amounts of light, and for the correction of spherical and chromatic aberration, could have been formed by natural selection, seems, I freely confess, absurd in the highest degree. When it was first said that the sun stood still and the world turned round, the common sense of mankind declared the doctrine false; but the old saying of Vox populi, vox Dei, as every philosopher knows, cannot be trusted in science. Reason tells me, that if numerous gradations from a simple and imperfect eye to one complex and perfect can be shown to exist, each grade being useful to its possessor, as is certainly the case; if further, the eye ever varies and the variations be inherited, as is likewise certainly the case; and if such variations should be useful to any animal under changing conditions of life, then the difficulty of believing that a perfect and complex eye could be formed by natural selection, though insuperable by our imagination, should not be considered as subversive of the theory. How a nerve comes to be sensitive to light, hardly concerns us more than how life itself originated; but I may remark that, as some of the lowest organisms, in which nerves cannot be detected, are capable of perceiving light, it does not seem impossible that certain sensitive elements in their sarcode should become aggregated and developed into nerves, endowed with this special sensibilites."

To suppose that the eye with all its inimitable contrivances for adjusting the focus to different distances, for admitting different amounts of light, and for the correction of spherical and chromatic aberration, could have been formed by natural selection, seems, I confess, absurd in the highest degree...The difficulty of believing that a perfect and complex eye could be formed by natural selection , though insuperable by our imagination, should not be considered subversive of the theory.

Although every part of the human frame has been fashioned by the same Divine hand and exhibits the most marvellous and beneficent adaptions for the use of men, the human eye stands pre-eminent above them all as the light of the body and the organ by which we become acquainted with the minutest and the nearest, the largest and most remote of the Creator’s work

Samkhya tells us that it is not the eyes that see but it is the seeing that creates the eyes

The species with eyes appears suddenly, capriciously as it were, and it is this species which changes the environment by creating its visible aspect. The eye does not come into being because it is needed. Just the contrary; because the eye appears it can henceforth be applied as a serviceable instrument. Each species builds up its stock of useful habits by selecting among, and taking advantage of, the innumerable useless actions which a living being performs out of sheer exuberance.

So you see that the eye of the intellect has received supernatural light, infused by grace, by which the doctors and saints knew light in darkness, and of darkness made light.

As a man is, so he sees. As the eye is formed, such are its powers.

[On the controversy between and .] [T]he classic case of convergence would be the eye and the human eye, or ian eyes. ...The common ancestor they had had a light sensitive spot, they did have some regulatory genes in common... for example, but that had to effectively independently recruit all the rest of the genes required to make a camera type eye, and that direction of evolutionary travel was in parallel. It was convergent. We even see in some s... a camera-type eye in single-celled critters where there's a retina made from s. There's a made from mitochondria. There's a there. They don't have a brain. I don't know how they use this thing but... plainly it's a camera-type eye. ...It's a of some sort. ...I would see that as a completely independent origin of a camera-type eye, albeit without a brain. I would see the octopus' and mammalian eye as being convergence in the Simon Conway Morris sense... There are certain ways that you can make an eye, that work, and all the steps along the way have to be favored, and... perhaps there are seven or eight... fundamentally different types of eye that we see on earth, and most of them have arisen more than once, always from a common ancestor, generally, that had as a light sensitive pigment. So you're then into an interesting terrain or... How common are the right types of light sensitive pigment? They're chemically not so straight forward.

The source of all light is in the eye.

If God had created colours, but not the faculty of vision, colours would have been of little use. [4] Or if God had created vision, but not made sure that objects could be seen, vision would have been worthless. [5] And even if he had made them both, but not created light – [6] then neither would have been of any value. So who contrived this universal accommodation of things to one another? Who fitted the sword to the scabbard and the scabbard to the sword? No one?

If eyes were made for seeing, then beauty is its own excuse for being.

Everything was deathly quiet. The eyes were the most terrifying: the eyes of dinosaurus; the eyes of trilobites and ants; the eyes of birds and butterflies; the eyes of bacteria... The humans alone possessed one hundred billion pairs of eyes, equal to the number of stars in the Milky Way, Among them were the eyes of ordinary men and women, and the eyes of Da Vinci, Shakespeare, and Einstein.

So our efforts led us to become those perfect objects of a sense whose nature nobody quite knew yet, and which later became perfect precisely through the perfection of its object, which was, in fact, us. I'm talking about sight, the eyes; only I had failed to foresee one thing: the eyes that finally opened to see us didn't belong to us but to others.

The eye: the window to the soul; the center of the face's beauty; the point where a person's identity is concentrated; but at the same time an optical instrument that requires constant washing, wetting, maintenance by a special liquid dosed with salt. So the gaze, the greatest marvel man possesses, is regularly interrupted by a mechanical washing action.