from Latin solus “alone” (see sole (adj.)) + ipse “self.” The view or theory that the self is the only object of real knowledge or the only thing that is real.
A human mental illness.
The universe is fractal in its nature. It’s every aspect comes to manifest a fraction of a whole mind construct.
To assume a single being would be capable of managing the entire universe on its own is to assume the incorporation of the all-being god into a single organism.
This is a contradiction by any means.
Any human claiming to be the god, like the so-called “Jesus” some of the Christians believe in, is mentally ill or driven to madness by traumatic factors.