from Latin solus “alone” (see sole (adj.)) + ipse “self.” The view or theory that self is the only object of real knowledge or the only thing that is real.
A human mental illness.
The universe is fractal in it’s 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 it’s 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 god, like the so called “Jesus” some of the Christians believe in, is mentally ill or driven to madness by traumatic factors.