The world is full of toxic and optimism attitudes, and we must know both universes in us and in other people.
In life people we think that are good friends can turn out to be bad, like a wonderful and gorgeous day can turn into a doomsday.
We will never know what is happiness with feeling sadness, like "the day" would mean anything if there was no "night".
The is the balance of opposites like Toxic/optimism is part of every one of us that is just One.
There is no logical separation between the egg and chicken because they are just one cycling system.