Definition of "omniscient"

For me, anything is possible. I am omniscient and omnipotent, extremely vain, and, what is more, I come in a handy self-carrying package.

1992, Douglas Adams, chapter 17, in Mostly Harmless (The Hitchhiker's Guide to the Galaxy), page 155

Those blind omniscients , those almighty slaves , Untenanting creation of its God

1796, Samuel Taylor Coleridge, The Destiny of Nations