Donna Tartt - The Secret History
Ownership of self (ego) leads to suffering. This is one of the most basic principles taught by the Buddha.
Here we read that ownership of suffering leads to the development of ego.
In the Sanskrit language there are separate terms for ego, soul, spirit, and Self. In English, both the illusory ego and Universal Self are referred to as 'the self'. This of course leads to a lot of confusion.
The Self is who you are, who you have always been and will always be. Attempts by the mind to conceptualise It are utterly futile. The Self is as It wishes to be from moment to moment.