I need help coming up with a Latin or Greek phrase that I might name a store in a book after.

De gustibus non est disputandum
Latin
Matters of taste can not be disputed

Annuit Domini (he who loves the Lord?) I think or Amicus Dei (friend of God), or a combo of the two

Someone around here recently opened a restaurant and called it pi. Just the symbol. If they don’t serve pie there, I’ll eat my hat.

The Internet says, “Parvulus quisnam diligo Senior,” but since it’s an online translation and I’m pretty sure that there’s at least a Domine in there, I dunno.

Check with @DominicX; he’s studied Latin.

On a more critical note, that’s a bit long for a store name.

Crescat scientia; vita excolatur! As knowledge grows, life is enriched.

Also a great:
Si hortum in bibliotheca habes, deerit nihil -Cicero
“If you have a garden and a library, you have everything you need.”

@Nullo Yeah, I was hoping there might be something that sums up the idea in a word or two.
Out of all these ideas, I really like @Kraigmo‘s suggestion of Amicus Dei.

Eidolon, Greek ειδωλον: meaning “image” —the image of the reader reflected in the books he/she reads.

There’s always Ex Libris!

“Ex Post Facto” is a favorite of mine. It’s a legal term meaning “after the fact”.

I was also going to suggest the simple Ex Libris
If it’s a business, you wouldn’t want it to be too obscure.