IDEM as a noun

IDEM can be used as an adjective or a pronoun

as an adjective: IDEM PUER the same boy

can somebody give me an example of it used as a noun?

thanks




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Semper idem [est].
Always the same thing [it is].

Extinctus amabitur idem. (Horati epistularum liber secundus)
When he is dead, the same man will the loved. (Horace, letters book 2)

Epitaph of the mathematician Jacob Bernouilli (likening himeself to his spiral series,—with spiral feminine): “I rise again the same [but] different”
En epigramma Jacobi Bernouilli mathematici (qui se spirae mirabili aequiparat,—spira generis feminini): “Eadem mutata resurgo”

Amīcus … est tamquam alter īdem, ‘a friend is like a second self,’ (Cicero de amicitia 80, cited in Cassel’s Latin dictionary).

In my experience, idem is most often used as a noun in the neuter singular.
idem dixit.
He said the same thing.

This is a substantive use of a pronoun.