Summarize the following text: Beauty is easy to appreciate but difficult to define. As we look around, we discover beauty in pleasurable objects and sights – in nature, in the laughter of children, in the kindness of strangers. But asked to define, we run into difficulties. Does beauty have an independent objective identity? Is it universal, or is it dependent on our sense perceptions? Does it lie in the eye of the beholder? We ask ourselves. A further difficulty arises when beauty manifests itself not only by its presence, but by its absence as well, as when we are repulsed by ugliness and desire beauty. But then ugliness has as much a place in our lives as beauty, or may be more ————- as when there is widespread hunger and injustice in a society. Philosophers have told us that beauty is an important part of life, but isn't ugliness a part of life too? And if art has beauty as an important ingredient, can it confine itself only to a projection of beauty? Can art ignore what is not beautiful?