Inside the Universes

[acme.n.01] as in: the highest level or degree attainable; the highest stage of development

Einstein to the pinnacle of fame
the summit of his ambition
so many highest superlatives achieved by man
at the top of his profession

[peak.n.04] as in: the top or extreme point of something (usually a mountain or hill)

[summit.n.03] as in: a meeting of heads of governments

[summit.v.01] as in: reach the summit (of a mountain)

Everest but not all summit