In my previous post I mentioned about Perceptual Realities. For the uninformed, here is a brief explanation of this term, which I have invented.
A perceptual reality does not exist universally.
For example, the laws of physics exist universally throughout the universe, eg. Gravity.
Beauty and ugliness, for example, do not exist universally. They exist only based on people's perceptions of a given object.
A car enthusiast might say cars are the most beautiful things in the world, but a card collector would say cards are the most beautiful things in the world.
Both of them disagree on a given object because both have their own perceived concepts of beauty.
This shows that beauty and ugliness do not exist universally and are limited to one's perceptions of his/her reality.