Now is it not funny that we place contradictory terms right next to each other, which shows that language itself has long "understood" this.

They are oxymorons indeed.

I would like to object to what you said about perceptions and those leading to the illusions. I would say, we perceive things right, we are very good at that but what we make out of them in our thoughts, in our realm of thinking and interpreting, is what causes illusions.

No, right, I agree. We do perceive things right. But, because our perception is limited, by the very fact of being human, our mind naturally turn to wrong ideas. Because when one see the world, one truly think that everything is separate from everything. But if you think, well, I am one with the air that I breathe, because there is no separation between us, and that person is also one, and the object that I see is one with the space in which it lives, because it could not physically exist if there is no space in which to dwell, and that space is one with me, and so on. Well, you can grasp that we are all one despite being different. It is our mind that falls into error, but our perception hints that to us.

The human ability to filter and see what he needs to see in his very environment is great.

Agree.

Edit: I had to modify my comment because I reread it and noticed that some parts of the text were eliminated and therefore, part of what it said made no sense, also because I translated some things wrong.