Word of the Day 07/04/23 Ipse Dixit

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Ipse Dixit (noun)
ipse dixit [ ip-se dik-sit; English ip-see dik-sit ]

noun
1. an assertion without proof.

ORIGIN: C16, Latin: he himself said it

HOW TO USE IPSE DIXIT IN A SENTENCE
It should have been—so we were to believe on his ipse dixit—contemporaneous with the Fall.
MYSTIC LONDON: | CHARLES MAURICE DAVIES

A man who says now what he denied six years ago cannot expect to be believed on his ipse dixit.
HANDBOOK OF HOME RULE (1887) | W. E. GLADSTONE ET AL.

Or why should there be any ipse dixit in our poetry, any more than there is in our philosophy?
DRYDEN'S WORKS VOL. 3 (OF 18) | JOHN DRYDEN

I want to say that, in the first place, I have made no charge of this sort upon my ipse dixit.
THE PAPERS AND WRITINGS OF ABRAHAM LINCOLN, VOLUME THREE | ABRAHAM LINCOLN

Swedenborg's ipse dixit ought to convince the most incredulous; for he speaks "from what has been heard and seen."
MOON LORE | TIMOTHY HARLEY

Now YOU come up with a sentence (or fic? or graphic?) that best illustrates the word.