You searched for: “non plus ultra
Non plus ultra.
Until here and not any further.

Based on a German source, Hercules is said to have settled in Cadiz, Spain, where he erected columns as a monument with the inscription: "These are the limit stones of Hercules" with the idea that this was the edge of the world.

Many Germans believe the phrase refers to something that is "the best", "the utmost", or "nothing better".

This entry is located in the following units: Latin Proverbs, Mottoes, Phrases, and Words: Group N (page 6) non- + (page 2) ultra-, ult- (page 1)