First of all, your essay is great!!!! I corrected quite a few stylistic and grammar mistakes, but your English is very good already. Большой привет и хорошего тебе настроения! ^_^

Correction:

Art should be available to everyone

Let me begin by quoting Lenin, whose words come to mind: "Art belongs to the public." :) So, it’s not a statement to doubt, I suggest. All kinds of art, including painting, are designed to activate feelings and inspire the consciousness of society. Priceless paintings make us think about the eternal and the ephemeral/transient, the real and the unreal, about religion and belief. It reminds us about everyday problems, about the things that escape from our attention, and about things that now remain only a part of our history. It is as though painters send us a message through the ages, telling us about their epoch and reflecting their mentality. Having seen a masterpiece, one can revalue life, change one's point of view on some problems or even alter one’s life principles.
Moreover, there is a particular feeling. It is an aesthetic feeling. Man has/ Humans have a need to see something beautiful every day. I am certain that meditation in the presence of something beautiful lets a person develop feelings of a higher degree. Everyone should feel oneself a participator in history and art, like nothing else, can help realize this aim.
Unfortunately, there are some barriers between individual and priceless paintings. There are expensive tickets, a location of paintings in private collections, unavailable to the public, poor restoration, one's location and so on. Expensive tickets are a real problem, but many venues offer discounts and free admission for children, students, and pensioners. I have no idea how people cope with the second problem. Perhaps they use the same means that apply to remedy/correct the problem of location. Salutation is rather wise. There are a lot of websites where you can make/perform a virtual visit to well-known art museums. This makes art more available to the public.

In conclusion, I should say that there is one more barrier. And that is a lack of free time. But I nevertheless believe that Art will always find an audience no matter what.

NOTES:

conscience, conscious, consciousness - see this link for explanations: http://answers.yahoo.com/question/index?qid=20080106055139AADf3BT

Salutation is rather wise. - I don't know what you mean by this. :(

You commit to memory when you memorize something like facts or words, but you make a visit to a museum. :)