The first appearance of a thing or a person cannot really deceive us. What can be truer than something which shows itself?
The problems begin when the observer imagine that he is entirely a part of the self-exposure he sees.
He really is a part, but only partially. He can share in the self-disclosure of a thing through his eyes, but cannot borrow its feature of being first.
For anyone comes to a new thing making a step farther from his previous state. The view of a new thing or person is altered by the previous state. Also, the joy of abandoning it makes us to plunge into the new image and this is a deviation from the ordinary way of seeing.
We falsely conceive that we can subsist only in the light aspect of a seen thing or person. It is a false supposition, because there are not pure objects of sight, all of them being something else, too.
Therefore, the existence according to sight requires a great effort of living against our own nature of and against the plural nature of the objects of sight. And it is an effort which finally weighs more than the lightness of the images we adhere to.
For instance, we might mention the effort of living in the imaginary word of the television or the hard endeavors of loving someone for his or her image. In the first case, we risk becoming blind to the life itself and in the second one we need to trespass against the habit of fidelity, losing the comfort of not searching permanently for faithful persons.